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  <div class="headertitle"><div class="title">pdu.c</div></div>
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<a href="pdu_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/* pdu.c -- CoAP message structure</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment"> *</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> * Copyright (C) 2010--2016 Olaf Bergmann &lt;bergmann@tzi.org&gt;</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> *</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> * This file is part of the CoAP library libcoap. Please see</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> * README for terms of use.</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> */</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span> </div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="preprocessor">#include &quot;coap_config.h&quot;</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="preprocessor">#if defined(HAVE_ASSERT_H) &amp;&amp; !defined(assert)</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="preprocessor"># include &lt;assert.h&gt;</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span> </div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="preprocessor">#if defined(HAVE_LIMITS_H)</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="preprocessor">#include &lt;limits.h&gt;</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span> </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="preprocessor">#include &lt;stdlib.h&gt;</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="preprocessor">#ifdef HAVE_ARPA_INET_H</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="preprocessor">#include &lt;arpa/inet.h&gt;</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span><span class="preprocessor">#ifdef HAVE_WINSOCK2_H</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="preprocessor">#include &lt;winsock2.h&gt;</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="preprocessor">#include &quot;<a class="code" href="libcoap_8h.html">libcoap.h</a>&quot;</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="preprocessor">#include &quot;<a class="code" href="coap__debug_8h.html">coap_debug.h</a>&quot;</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="preprocessor">#include &quot;<a class="code" href="pdu_8h.html">pdu.h</a>&quot;</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="preprocessor">#include &quot;<a class="code" href="option_8h.html">option.h</a>&quot;</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="preprocessor">#include &quot;<a class="code" href="encode_8h.html">encode.h</a>&quot;</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="preprocessor">#include &quot;<a class="code" href="mem_8h.html">mem.h</a>&quot;</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="preprocessor">#include &quot;<a class="code" href="coap__session_8h.html">coap_session.h</a>&quot;</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span> </div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="preprocessor">#ifndef min</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"><a class="line" href="pdu_8c.html#ac6afabdc09a49a433ee19d8a9486056d">   38</a></span><span class="preprocessor">#define min(a,b) ((a) &lt; (b) ? (a) : (b))</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span> </div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="preprocessor">#ifndef max</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"><a class="line" href="pdu_8c.html#affe776513b24d84b39af8ab0930fef7f">   42</a></span><span class="preprocessor">#define max(a,b) ((a) &gt; (b) ? (a) : (b))</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span> </div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span><span class="keywordtype">void</span></div>
<div class="foldopen" id="foldopen00046" data-start="{" data-end="}">
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"><a class="line" href="pdu_8c.html#a9dbdf354e2da5e80fea4c0d4a8df6d05">   46</a></span><a class="code hl_function" href="pdu_8c.html#a9dbdf354e2da5e80fea4c0d4a8df6d05">coap_pdu_clear</a>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu, <span class="keywordtype">size_t</span> size) {</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu);</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>);</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> &gt;= <a class="code hl_define" href="pdu_8h.html#a3ad0069e1ed066d9f49b570446a9b847">COAP_PDU_MAX_UDP_HEADER_SIZE</a>);</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span>  <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a> &gt; size)</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a> = size;</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a0d5796b82924c69852860053020d0684">type</a> = 0;</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a69c774f85355eeacc4742355527a8097">code</a> = 0;</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a> = 0;</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a> = 0;</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a65877a685b1f3428d3dc872af075ddc1">tid</a> = 0;</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a9b6c14a84f46820634c4dd3059c73b20">max_delta</a> = 0;</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a5bd82194d62c90d9243313cbbbe26d47">max_size</a> = size;</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> = 0;</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> = NULL;</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>}</div>
</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span> </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span><span class="preprocessor">#ifdef WITH_LWIP</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>coap_pdu_from_pbuf( <span class="keyword">struct</span> pbuf *pbuf )</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>{</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>  <a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu;</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span>  <span class="keywordflow">if</span> (pbuf == NULL) <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span> </div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>  LWIP_ASSERT(<span class="stringliteral">&quot;Can only deal with contiguous PBUFs&quot;</span>, pbuf-&gt;tot_len == pbuf-&gt;len);</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>  LWIP_ASSERT(<span class="stringliteral">&quot;coap_read needs to receive an exclusive copy of the incoming pbuf&quot;</span>, pbuf-&gt;ref == 1);</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span> </div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>  pdu = <a class="code hl_function" href="mem_8h.html#a9f9fd8d6cf24f9c45a5501aeba5acaf9">coap_malloc_type</a>(<a class="code hl_enumvalue" href="mem_8h.html#a703fa791ab7a14ff983df73b15e9c620a7442ae365f092f7aa0e516e6d67e7740">COAP_PDU</a>, <span class="keyword">sizeof</span>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a>) );</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>  <span class="keywordflow">if</span> (!pdu) {</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>    pbuf_free(pbuf);</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span>    <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>  }</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span> </div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> = <a class="code hl_define" href="pdu_8h.html#a3ad0069e1ed066d9f49b570446a9b847">COAP_PDU_MAX_UDP_HEADER_SIZE</a>;</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>  pdu-&gt;pbuf = pbuf;</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *)pbuf-&gt;payload + pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a>;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a> = pbuf-&gt;tot_len - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a>;</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>  <a class="code hl_function" href="pdu_8c.html#a9dbdf354e2da5e80fea4c0d4a8df6d05">coap_pdu_clear</a>(pdu, pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a>);</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span>  <span class="keywordflow">return</span> pdu;</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span>}</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span> </div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span><a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *</div>
<div class="foldopen" id="foldopen00091" data-start="{" data-end="}">
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"><a class="line" href="pdu_8c.html#a4f019ad11b0f633524175488aecbd7d1">   91</a></span><a class="code hl_function" href="pdu_8c.html#a4f019ad11b0f633524175488aecbd7d1">coap_pdu_init</a>(<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> type, <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> code, uint16_t tid, <span class="keywordtype">size_t</span> size) {</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span>  <a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu;</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span> </div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>  pdu = <a class="code hl_function" href="mem_8h.html#a9f9fd8d6cf24f9c45a5501aeba5acaf9">coap_malloc_type</a>(<a class="code hl_enumvalue" href="mem_8h.html#a703fa791ab7a14ff983df73b15e9c620a7442ae365f092f7aa0e516e6d67e7740">COAP_PDU</a>, <span class="keyword">sizeof</span>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a>));</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span>  <span class="keywordflow">if</span> (!pdu) <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span> </div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span><span class="preprocessor">#if defined(WITH_CONTIKI) || defined(WITH_LWIP)</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(size &lt;= <a class="code hl_define" href="pdu_8h.html#aed8d3a898b778a92637d2f2ef63d7fa3">COAP_MAX_MESSAGE_SIZE_TCP16</a> + 4);</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span>  <span class="keywordflow">if</span> (size &gt; <a class="code hl_define" href="pdu_8h.html#aed8d3a898b778a92637d2f2ef63d7fa3">COAP_MAX_MESSAGE_SIZE_TCP16</a> + 4)</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>    <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> = <a class="code hl_define" href="pdu_8h.html#a3ad0069e1ed066d9f49b570446a9b847">COAP_PDU_MAX_UDP_HEADER_SIZE</a>;</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span><span class="preprocessor">#else</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> = <a class="code hl_define" href="pdu_8h.html#a682638452038ffdfbf08ce4875f95a2f">COAP_PDU_MAX_TCP_HEADER_SIZE</a>;</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span> </div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span><span class="preprocessor">#ifdef WITH_LWIP</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span>  pdu-&gt;pbuf = pbuf_alloc(PBUF_TRANSPORT, size + pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a>, PBUF_RAM);</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span>  <span class="keywordflow">if</span> (pdu-&gt;pbuf == NULL) {</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span>    <a class="code hl_function" href="mem_8h.html#ae7214e0c73a4d4290525873e739ed422">coap_free_type</a>(<a class="code hl_enumvalue" href="mem_8h.html#a703fa791ab7a14ff983df73b15e9c620a7442ae365f092f7aa0e516e6d67e7740">COAP_PDU</a>, pdu);</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span>    <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span>  }</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *)pdu-&gt;pbuf-&gt;payload + pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a>;</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span><span class="preprocessor">#else </span><span class="comment">/* WITH_LWIP */</span><span class="preprocessor"></span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span>  <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *buf;</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a> = <a class="code hl_define" href="pdu_8c.html#ac6afabdc09a49a433ee19d8a9486056d">min</a>(size, 256);</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span>  buf = <a class="code hl_function" href="mem_8h.html#a9f9fd8d6cf24f9c45a5501aeba5acaf9">coap_malloc_type</a>(<a class="code hl_enumvalue" href="mem_8h.html#a703fa791ab7a14ff983df73b15e9c620ac7bb2f8183a3ed5a92a3e085b542f42f">COAP_PDU_BUF</a>, pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a> + pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a>);</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span>  <span class="keywordflow">if</span> (buf == NULL) {</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span>    <a class="code hl_function" href="mem_8h.html#ae7214e0c73a4d4290525873e739ed422">coap_free_type</a>(<a class="code hl_enumvalue" href="mem_8h.html#a703fa791ab7a14ff983df73b15e9c620a7442ae365f092f7aa0e516e6d67e7740">COAP_PDU</a>, pdu);</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>    <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span>  }</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> = buf + pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a>;</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span><span class="preprocessor">#endif </span><span class="comment">/* WITH_LWIP */</span><span class="preprocessor"></span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span>  <a class="code hl_function" href="pdu_8c.html#a9dbdf354e2da5e80fea4c0d4a8df6d05">coap_pdu_clear</a>(pdu, size);</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a65877a685b1f3428d3dc872af075ddc1">tid</a> = tid;</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a0d5796b82924c69852860053020d0684">type</a> = type;</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a69c774f85355eeacc4742355527a8097">code</a> = code;</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span>  <span class="keywordflow">return</span> pdu;</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span>}</div>
</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span> </div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span><a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *</div>
<div class="foldopen" id="foldopen00131" data-start="{" data-end="}">
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"><a class="line" href="pdu_8c.html#ade1a728d3049d57703d805e71d0a38dd">  131</a></span><a class="code hl_function" href="pdu_8c.html#ade1a728d3049d57703d805e71d0a38dd">coap_new_pdu</a>(<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code hl_struct" href="structcoap__session__t.html">coap_session_t</a> *session) {</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span>  <a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu = <a class="code hl_function" href="pdu_8c.html#a4f019ad11b0f633524175488aecbd7d1">coap_pdu_init</a>(0, 0, 0, <a class="code hl_function" href="coap__session_8c.html#a4368ee622c681bf7cf0b7cfe99c8ab37">coap_session_max_pdu_size</a>(session));</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span><span class="preprocessor">#ifndef NDEBUG</span></div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span>  <span class="keywordflow">if</span> (!pdu)</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span>    <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a3537fbf756308b6267dd4354615eb413">LOG_CRIT</a>, <span class="stringliteral">&quot;coap_new_pdu: cannot allocate memory for new PDU\n&quot;</span>);</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span>  <span class="keywordflow">return</span> pdu;</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span>}</div>
</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span><span class="keywordtype">void</span></div>
<div class="foldopen" id="foldopen00141" data-start="{" data-end="}">
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"><a class="line" href="pdu_8c.html#a48581f968a30ef4278702eb1c16b7a90">  141</a></span><a class="code hl_function" href="pdu_8c.html#a48581f968a30ef4278702eb1c16b7a90">coap_delete_pdu</a>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu) {</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span>  <span class="keywordflow">if</span> (pdu != NULL) {</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span><span class="preprocessor">#ifdef WITH_LWIP</span></div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span>    pbuf_free(pdu-&gt;pbuf);</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span><span class="preprocessor">#else</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span>    <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> != NULL)</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>      <a class="code hl_function" href="mem_8h.html#ae7214e0c73a4d4290525873e739ed422">coap_free_type</a>(<a class="code hl_enumvalue" href="mem_8h.html#a703fa791ab7a14ff983df73b15e9c620ac7bb2f8183a3ed5a92a3e085b542f42f">COAP_PDU_BUF</a>, pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a>);</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span>    <a class="code hl_function" href="mem_8h.html#ae7214e0c73a4d4290525873e739ed422">coap_free_type</a>(<a class="code hl_enumvalue" href="mem_8h.html#a703fa791ab7a14ff983df73b15e9c620a7442ae365f092f7aa0e516e6d67e7740">COAP_PDU</a>, pdu);</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span>  }</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span>}</div>
</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span> </div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span><span class="keywordtype">int</span></div>
<div class="foldopen" id="foldopen00154" data-start="{" data-end="}">
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"><a class="line" href="pdu_8c.html#add46ce956878a4121e8887b84c6d4a6b">  154</a></span><a class="code hl_function" href="pdu_8c.html#add46ce956878a4121e8887b84c6d4a6b">coap_pdu_resize</a>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu, <span class="keywordtype">size_t</span> new_size) {</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span>  <span class="keywordflow">if</span> (new_size &gt; pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a>) {</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span><span class="preprocessor">#if !defined(WITH_LWIP) &amp;&amp; !defined(WITH_CONTIKI)</span></div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span>    <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *new_hdr;</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span>    <span class="keywordtype">size_t</span> offset;</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span>    <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a5bd82194d62c90d9243313cbbbe26d47">max_size</a> &amp;&amp; new_size &gt; pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a5bd82194d62c90d9243313cbbbe26d47">max_size</a>) {</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span>      <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>, <span class="stringliteral">&quot;coap_pdu_resize: pdu too big\n&quot;</span>);</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span>      <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span>    }</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span><span class="preprocessor">#if !defined(WITH_LWIP) &amp;&amp; !defined(WITH_CONTIKI)</span></div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span>    <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> != NULL) {</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span>      <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> &gt; pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>);</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span>      offset = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>;</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>    } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span>      offset = 0;</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span>    }</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span>    new_hdr = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>*)realloc(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a>, new_size + pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a>);</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span>    <span class="keywordflow">if</span> (new_hdr == NULL) {</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span>      <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>, <span class="stringliteral">&quot;coap_pdu_resize: realloc failed\n&quot;</span>);</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span>      <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span>    }</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> = new_hdr + pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a>;</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span>    <span class="keywordflow">if</span> (offset &gt; 0)</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> + offset;</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span>    <span class="keywordflow">else</span></div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> = NULL;</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span>  }</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a> = new_size;</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span>}</div>
</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span> </div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span><span class="keyword">static</span> <span class="keywordtype">int</span></div>
<div class="foldopen" id="foldopen00188" data-start="{" data-end="}">
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"><a class="line" href="pdu_8c.html#af25c1916c60fdcf35cd4e178aebbb867">  188</a></span><a class="code hl_function" href="pdu_8c.html#af25c1916c60fdcf35cd4e178aebbb867">coap_pdu_check_resize</a>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu, <span class="keywordtype">size_t</span> size) {</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span>  <span class="keywordflow">if</span> (size &gt; pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a>) {</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span>    <span class="keywordtype">size_t</span> new_size = <a class="code hl_define" href="pdu_8c.html#affe776513b24d84b39af8ab0930fef7f">max</a>(256, pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a> * 2);</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span>    <span class="keywordflow">while</span> (size &gt; new_size)</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span>      new_size *= 2;</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span>    <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a5bd82194d62c90d9243313cbbbe26d47">max_size</a> &amp;&amp; new_size &gt; pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a5bd82194d62c90d9243313cbbbe26d47">max_size</a>) {</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span>      new_size = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a5bd82194d62c90d9243313cbbbe26d47">max_size</a>;</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span>      <span class="keywordflow">if</span> (new_size &lt; size)</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span>        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span>    }</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span>    <span class="keywordflow">if</span> (!<a class="code hl_function" href="pdu_8c.html#add46ce956878a4121e8887b84c6d4a6b">coap_pdu_resize</a>(pdu, new_size))</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span>      <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span>  }</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span>}</div>
</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span> </div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span><span class="keywordtype">int</span></div>
<div class="foldopen" id="foldopen00205" data-start="{" data-end="}">
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"><a class="line" href="pdu_8c.html#a923f81168ccbbaac1a4ca50837d7be94">  205</a></span><a class="code hl_function" href="pdu_8c.html#a923f81168ccbbaac1a4ca50837d7be94">coap_add_token</a>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu, <span class="keywordtype">size_t</span> len, <span class="keyword">const</span> <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *data) {</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span>  <span class="comment">/* must allow for pdu == NULL as callers may rely on this */</span></div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span>  <span class="keywordflow">if</span> (!pdu || len &gt; 8)</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span> </div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span>  <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a>) {</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span>    <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>,</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span>             <span class="stringliteral">&quot;coap_add_token: The token must defined first. Token ignored\n&quot;</span>);</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>  }</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span>  <span class="keywordflow">if</span> (!<a class="code hl_function" href="pdu_8c.html#af25c1916c60fdcf35cd4e178aebbb867">coap_pdu_check_resize</a>(pdu, len))</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a> = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)len;</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span>  <span class="keywordflow">if</span> (len)</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span>    memcpy(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>, data, len);</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a9b6c14a84f46820634c4dd3059c73b20">max_delta</a> = 0;</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> = len;</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> = NULL;</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span> </div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span>}</div>
</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span> </div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span><span class="comment">/* FIXME: de-duplicate code with coap_add_option_later */</span></div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span><span class="keywordtype">size_t</span></div>
<div class="foldopen" id="foldopen00229" data-start="{" data-end="}">
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"><a class="line" href="pdu_8c.html#aa1314f60fbc25733cfabaa975adc5aae">  229</a></span><a class="code hl_function" href="pdu_8c.html#aa1314f60fbc25733cfabaa975adc5aae">coap_add_option</a>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu, uint16_t type, <span class="keywordtype">size_t</span> len, <span class="keyword">const</span> <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *data) {</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span>  <span class="keywordtype">size_t</span> optsize;</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>  <a class="code hl_typedef" href="option_8h.html#a963ad4994625360a5ac70d9df2ab5412">coap_opt_t</a> *opt;</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span> </div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu);</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> = NULL;</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span> </div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span>  <span class="keywordflow">if</span> (type &lt; pdu-&gt;max_delta) {</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span>    <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>,</div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span>             <span class="stringliteral">&quot;coap_add_option: options are not in correct order\n&quot;</span>);</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span>  }</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span> </div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span>  <span class="keywordflow">if</span> (!<a class="code hl_function" href="pdu_8c.html#af25c1916c60fdcf35cd4e178aebbb867">coap_pdu_check_resize</a>(pdu,</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> + <a class="code hl_function" href="group__opt__filter.html#ga55f19454026048e906139d575feddecb">coap_opt_encode_size</a>(type - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a9b6c14a84f46820634c4dd3059c73b20">max_delta</a>, len)))</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span> </div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span>  opt = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> + pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a>;</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span> </div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span>  <span class="comment">/* encode option and check length */</span></div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span>  optsize = <a class="code hl_function" href="group__opt__filter.html#ga358cb455deaefca1b1234298f018c9ab">coap_opt_encode</a>(opt, pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a> - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a>,</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span>                            type - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a9b6c14a84f46820634c4dd3059c73b20">max_delta</a>, data, len);</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span> </div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span>  <span class="keywordflow">if</span> (!optsize) {</div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span>    <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>, <span class="stringliteral">&quot;coap_add_option: cannot add option\n&quot;</span>);</div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span>    <span class="comment">/* error */</span></div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a9b6c14a84f46820634c4dd3059c73b20">max_delta</a> = type;</div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> += optsize;</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span>  }</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span> </div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span>  <span class="keywordflow">return</span> optsize;</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span>}</div>
</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span> </div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span><span class="comment">/* FIXME: de-duplicate code with coap_add_option */</span></div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span><a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>*</div>
<div class="foldopen" id="foldopen00266" data-start="{" data-end="}">
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"><a class="line" href="pdu_8c.html#a47b43066ecb3584af0c425b8ee97db20">  266</a></span><a class="code hl_function" href="pdu_8c.html#a47b43066ecb3584af0c425b8ee97db20">coap_add_option_later</a>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu, uint16_t type, <span class="keywordtype">size_t</span> len) {</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span>  <span class="keywordtype">size_t</span> optsize;</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span>  <a class="code hl_typedef" href="option_8h.html#a963ad4994625360a5ac70d9df2ab5412">coap_opt_t</a> *opt;</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span> </div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu);</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> = NULL;</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span> </div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span>  <span class="keywordflow">if</span> (type &lt; pdu-&gt;max_delta) {</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span>    <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>,</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span>             <span class="stringliteral">&quot;coap_add_option: options are not in correct order\n&quot;</span>);</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span>    <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span>  }</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span> </div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span>  <span class="keywordflow">if</span> (!<a class="code hl_function" href="pdu_8c.html#af25c1916c60fdcf35cd4e178aebbb867">coap_pdu_check_resize</a>(pdu,</div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> + <a class="code hl_function" href="group__opt__filter.html#ga55f19454026048e906139d575feddecb">coap_opt_encode_size</a>(type - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a9b6c14a84f46820634c4dd3059c73b20">max_delta</a>, len)))</div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span> </div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span>  opt = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> + pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a>;</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span> </div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span>  <span class="comment">/* encode option and check length */</span></div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span>  optsize = <a class="code hl_function" href="group__opt__filter.html#ga358cb455deaefca1b1234298f018c9ab">coap_opt_encode</a>(opt, pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a> - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a>,</div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span>                            type - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a9b6c14a84f46820634c4dd3059c73b20">max_delta</a>, NULL, len);</div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span> </div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span>  <span class="keywordflow">if</span> (!optsize) {</div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span>    <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>, <span class="stringliteral">&quot;coap_add_option: cannot add option\n&quot;</span>);</div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span>    <span class="comment">/* error */</span></div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span>    <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a9b6c14a84f46820634c4dd3059c73b20">max_delta</a> = type;</div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> += (uint16_t)optsize;</div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span>  }</div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span> </div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span>  <span class="keywordflow">return</span> opt + optsize - len;</div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span>}</div>
</div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span> </div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span><span class="keywordtype">int</span></div>
<div class="foldopen" id="foldopen00302" data-start="{" data-end="}">
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"><a class="line" href="pdu_8c.html#af71a3f810ab9f0f657c25c425826af40">  302</a></span><a class="code hl_function" href="pdu_8c.html#af71a3f810ab9f0f657c25c425826af40">coap_add_data</a>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu, <span class="keywordtype">size_t</span> len, <span class="keyword">const</span> <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *data) {</div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span>  <span class="keywordflow">if</span> (len == 0) {</div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span>    <span class="keywordflow">return</span> 1;</div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span>    <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *payload = <a class="code hl_function" href="pdu_8c.html#a3b73fa26504e7a8da604375d1146b7e3">coap_add_data_after</a>(pdu, len);</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span>    <span class="keywordflow">if</span> (payload != NULL)</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span>      memcpy(payload, data, len);</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span>    <span class="keywordflow">return</span> payload != NULL;</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span>  }</div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span>}</div>
</div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno">  312</span> </div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span><a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *</div>
<div class="foldopen" id="foldopen00314" data-start="{" data-end="}">
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno"><a class="line" href="pdu_8c.html#a3b73fa26504e7a8da604375d1146b7e3">  314</a></span><a class="code hl_function" href="pdu_8c.html#a3b73fa26504e7a8da604375d1146b7e3">coap_add_data_after</a>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu, <span class="keywordtype">size_t</span> len) {</div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno">  315</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu);</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno">  316</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> == NULL);</div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno">  317</span> </div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno">  318</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> = NULL;</div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno">  319</span> </div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno">  320</span>  <span class="keywordflow">if</span> (len == 0)</div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno">  321</span>    <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno">  322</span> </div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno">  323</span>  <span class="keywordflow">if</span> (!<a class="code hl_function" href="pdu_8c.html#add46ce956878a4121e8887b84c6d4a6b">coap_pdu_resize</a>(pdu, pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> + len + 1))</div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno">  324</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno">  325</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a>++] = <a class="code hl_define" href="pdu_8h.html#ad46f0093ab0b2b969651b0d45d9bf8d0">COAP_PAYLOAD_START</a>;</div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno">  326</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> + pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a>;</div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno">  327</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> += len;</div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno">  328</span>  <span class="keywordflow">return</span> pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a>;</div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno">  329</span>}</div>
</div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno">  330</span> </div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno">  331</span><span class="keywordtype">int</span></div>
<div class="foldopen" id="foldopen00332" data-start="{" data-end="}">
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"><a class="line" href="pdu_8c.html#a6701e5ec876a5ce59c7892f66d46c67b">  332</a></span><a class="code hl_function" href="pdu_8c.html#a6701e5ec876a5ce59c7892f66d46c67b">coap_get_data</a>(<span class="keyword">const</span> <a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu, <span class="keywordtype">size_t</span> *len, <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> **data) {</div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno">  333</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu);</div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno">  334</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(len);</div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno">  335</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(data);</div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno">  336</span> </div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno">  337</span>  *data = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a>;</div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno">  338</span>  <span class="keywordflow">if</span>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> == NULL) {</div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno">  339</span>     *len = 0;</div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno">  340</span>     <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno">  341</span>  }</div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno">  342</span> </div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno">  343</span>  *len = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> - (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>);</div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno">  344</span> </div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno">  345</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno">  346</span>}</div>
</div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno">  347</span> </div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno">  348</span><span class="preprocessor">#ifndef SHORT_ERROR_RESPONSE</span></div>
<div class="foldopen" id="foldopen00349" data-start="{" data-end="};">
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno"><a class="line" href="structerror__desc__t.html">  349</a></span><span class="keyword">typedef</span> <span class="keyword">struct </span>{</div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno"><a class="line" href="structerror__desc__t.html#a5de81d35400d8705760ac225630022cc">  350</a></span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code hl_variable" href="structerror__desc__t.html#a5de81d35400d8705760ac225630022cc">code</a>;</div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno"><a class="line" href="structerror__desc__t.html#ad857c9bd0071af04c60dfe17f074854f">  351</a></span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code hl_variable" href="structerror__desc__t.html#ad857c9bd0071af04c60dfe17f074854f">phrase</a>;</div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno">  352</span>} <a class="code hl_struct" href="structerror__desc__t.html">error_desc_t</a>;</div>
</div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno">  353</span> </div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno">  354</span><span class="comment">/* if you change anything here, make sure, that the longest string does not</span></div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno">  355</span><span class="comment"> * exceed COAP_ERROR_PHRASE_LENGTH. */</span></div>
<div class="foldopen" id="foldopen00356" data-start="{" data-end="};">
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno"><a class="line" href="pdu_8c.html#a48518e7e0d3c7b91a3a4efb3d6eac23c">  356</a></span><a class="code hl_struct" href="structerror__desc__t.html">error_desc_t</a> <a class="code hl_variable" href="pdu_8c.html#a48518e7e0d3c7b91a3a4efb3d6eac23c">coap_error</a>[] = {</div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno">  357</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(201), <span class="stringliteral">&quot;Created&quot;</span> },</div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno">  358</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(202), <span class="stringliteral">&quot;Deleted&quot;</span> },</div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno">  359</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(203), <span class="stringliteral">&quot;Valid&quot;</span> },</div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno">  360</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(204), <span class="stringliteral">&quot;Changed&quot;</span> },</div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno">  361</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(205), <span class="stringliteral">&quot;Content&quot;</span> },</div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno">  362</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(231), <span class="stringliteral">&quot;Continue&quot;</span> },</div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno">  363</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(400), <span class="stringliteral">&quot;Bad Request&quot;</span> },</div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno">  364</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(401), <span class="stringliteral">&quot;Unauthorized&quot;</span> },</div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno">  365</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(402), <span class="stringliteral">&quot;Bad Option&quot;</span> },</div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno">  366</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(403), <span class="stringliteral">&quot;Forbidden&quot;</span> },</div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno">  367</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(404), <span class="stringliteral">&quot;Not Found&quot;</span> },</div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno">  368</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(405), <span class="stringliteral">&quot;Method Not Allowed&quot;</span> },</div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno">  369</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(406), <span class="stringliteral">&quot;Not Acceptable&quot;</span> },</div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno">  370</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(408), <span class="stringliteral">&quot;Request Entity Incomplete&quot;</span> },</div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno">  371</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(412), <span class="stringliteral">&quot;Precondition Failed&quot;</span> },</div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno">  372</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(413), <span class="stringliteral">&quot;Request Entity Too Large&quot;</span> },</div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno">  373</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(415), <span class="stringliteral">&quot;Unsupported Content-Format&quot;</span> },</div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno">  374</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(500), <span class="stringliteral">&quot;Internal Server Error&quot;</span> },</div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno">  375</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(501), <span class="stringliteral">&quot;Not Implemented&quot;</span> },</div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno">  376</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(502), <span class="stringliteral">&quot;Bad Gateway&quot;</span> },</div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno">  377</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(503), <span class="stringliteral">&quot;Service Unavailable&quot;</span> },</div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno">  378</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(504), <span class="stringliteral">&quot;Gateway Timeout&quot;</span> },</div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno">  379</span>  { <a class="code hl_define" href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a>(505), <span class="stringliteral">&quot;Proxying Not Supported&quot;</span> },</div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno">  380</span>  { 0, NULL }                        <span class="comment">/* end marker */</span></div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno">  381</span>};</div>
</div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno">  382</span> </div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno">  383</span><span class="keyword">const</span> <span class="keywordtype">char</span> *</div>
<div class="foldopen" id="foldopen00384" data-start="{" data-end="}">
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno"><a class="line" href="pdu_8c.html#a0820d2413f167cd92f8267bf0aaa6ecb">  384</a></span><a class="code hl_function" href="pdu_8c.html#a0820d2413f167cd92f8267bf0aaa6ecb">coap_response_phrase</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> code) {</div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno">  385</span>  <span class="keywordtype">int</span> i;</div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno">  386</span>  <span class="keywordflow">for</span> (i = 0; <a class="code hl_variable" href="pdu_8c.html#a48518e7e0d3c7b91a3a4efb3d6eac23c">coap_error</a>[i].<a class="code hl_variable" href="structerror__desc__t.html#a5de81d35400d8705760ac225630022cc">code</a>; ++i) {</div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno">  387</span>    <span class="keywordflow">if</span> (<a class="code hl_variable" href="pdu_8c.html#a48518e7e0d3c7b91a3a4efb3d6eac23c">coap_error</a>[i].code == code)</div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno">  388</span>      <span class="keywordflow">return</span> <a class="code hl_variable" href="pdu_8c.html#a48518e7e0d3c7b91a3a4efb3d6eac23c">coap_error</a>[i].<a class="code hl_variable" href="structerror__desc__t.html#ad857c9bd0071af04c60dfe17f074854f">phrase</a>;</div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno">  389</span>  }</div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno">  390</span>  <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno">  391</span>}</div>
</div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno">  392</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno">  393</span> </div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno">  399</span><span class="keyword">static</span> <span class="keywordtype">size_t</span></div>
<div class="foldopen" id="foldopen00400" data-start="{" data-end="}">
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno"><a class="line" href="pdu_8c.html#a1a5660500af5276ede2c7472958f2826">  400</a></span><a class="code hl_function" href="pdu_8c.html#a1a5660500af5276ede2c7472958f2826">next_option_safe</a>(<a class="code hl_typedef" href="option_8h.html#a963ad4994625360a5ac70d9df2ab5412">coap_opt_t</a> **optp, <span class="keywordtype">size_t</span> *length) {</div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno">  401</span>  <a class="code hl_struct" href="structcoap__option__t.html">coap_option_t</a> option;</div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno">  402</span>  <span class="keywordtype">size_t</span> optsize;</div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno">  403</span> </div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno">  404</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(optp); <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(*optp);</div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno">  405</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(length);</div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno">  406</span> </div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno">  407</span>  optsize = <a class="code hl_function" href="option_8c.html#a11de99f50cc9f5a34fd9e4d121ecfd13">coap_opt_parse</a>(*optp, *length, &amp;option);</div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno">  408</span>  <span class="keywordflow">if</span> (optsize) {</div>
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno">  409</span>    <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(optsize &lt;= *length);</div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno">  410</span> </div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno">  411</span>    *optp += optsize;</div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno">  412</span>    *length -= optsize;</div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno">  413</span>  }</div>
<div class="line"><a id="l00414" name="l00414"></a><span class="lineno">  414</span> </div>
<div class="line"><a id="l00415" name="l00415"></a><span class="lineno">  415</span>  <span class="keywordflow">return</span> optsize;</div>
<div class="line"><a id="l00416" name="l00416"></a><span class="lineno">  416</span>}</div>
</div>
<div class="line"><a id="l00417" name="l00417"></a><span class="lineno">  417</span> </div>
<div class="line"><a id="l00418" name="l00418"></a><span class="lineno">  418</span><span class="keywordtype">size_t</span></div>
<div class="foldopen" id="foldopen00419" data-start="{" data-end="}">
<div class="line"><a id="l00419" name="l00419"></a><span class="lineno"><a class="line" href="pdu_8c.html#a53c48f11ca3bc0d2106bd8b76f7430c8">  419</a></span><a class="code hl_function" href="pdu_8c.html#a53c48f11ca3bc0d2106bd8b76f7430c8">coap_pdu_parse_header_size</a>(<a class="code hl_typedef" href="pdu_8h.html#a9f23fe72ad67820dcdf888bb8b619dde">coap_proto_t</a> proto,</div>
<div class="line"><a id="l00420" name="l00420"></a><span class="lineno">  420</span>                           <span class="keyword">const</span> <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *data) {</div>
<div class="line"><a id="l00421" name="l00421"></a><span class="lineno">  421</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(data);</div>
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno">  422</span>  <span class="keywordtype">size_t</span> header_size = 0;</div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno">  423</span> </div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno">  424</span>  <span class="keywordflow">if</span> (proto == <a class="code hl_define" href="pdu_8h.html#a1dd5fe6cc335ea31d49f3eb469a5990a">COAP_PROTO_TCP</a> || proto==<a class="code hl_define" href="pdu_8h.html#a6c9a1dd7b311e5a420e3a7c36b918a02">COAP_PROTO_TLS</a>) {</div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno">  425</span>    <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> len = *data &gt;&gt; 4;</div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno">  426</span>    <span class="keywordflow">if</span> (len &lt; 13)</div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno">  427</span>      header_size = 2;</div>
<div class="line"><a id="l00428" name="l00428"></a><span class="lineno">  428</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (len==13)</div>
<div class="line"><a id="l00429" name="l00429"></a><span class="lineno">  429</span>      header_size = 3;</div>
<div class="line"><a id="l00430" name="l00430"></a><span class="lineno">  430</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (len==14)</div>
<div class="line"><a id="l00431" name="l00431"></a><span class="lineno">  431</span>      header_size = 4;</div>
<div class="line"><a id="l00432" name="l00432"></a><span class="lineno">  432</span>    <span class="keywordflow">else</span></div>
<div class="line"><a id="l00433" name="l00433"></a><span class="lineno">  433</span>      header_size = 6;</div>
<div class="line"><a id="l00434" name="l00434"></a><span class="lineno">  434</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (proto == <a class="code hl_define" href="pdu_8h.html#aeda5d0dcadd6cbb8c13e1950fcff787a">COAP_PROTO_UDP</a> || proto==<a class="code hl_define" href="pdu_8h.html#ac10ea7ae66e5e549b47854417311b560">COAP_PROTO_DTLS</a>) {</div>
<div class="line"><a id="l00435" name="l00435"></a><span class="lineno">  435</span>    header_size = 4;</div>
<div class="line"><a id="l00436" name="l00436"></a><span class="lineno">  436</span>  }</div>
<div class="line"><a id="l00437" name="l00437"></a><span class="lineno">  437</span> </div>
<div class="line"><a id="l00438" name="l00438"></a><span class="lineno">  438</span>  <span class="keywordflow">return</span> header_size;</div>
<div class="line"><a id="l00439" name="l00439"></a><span class="lineno">  439</span>}</div>
</div>
<div class="line"><a id="l00440" name="l00440"></a><span class="lineno">  440</span> </div>
<div class="line"><a id="l00441" name="l00441"></a><span class="lineno">  441</span><span class="keywordtype">size_t</span></div>
<div class="foldopen" id="foldopen00442" data-start="{" data-end="}">
<div class="line"><a id="l00442" name="l00442"></a><span class="lineno"><a class="line" href="pdu_8c.html#ad9460a91b9a9747bc85ff8e48a00f4d1">  442</a></span><a class="code hl_function" href="pdu_8c.html#ad9460a91b9a9747bc85ff8e48a00f4d1">coap_pdu_parse_size</a>(<a class="code hl_typedef" href="pdu_8h.html#a9f23fe72ad67820dcdf888bb8b619dde">coap_proto_t</a> proto,</div>
<div class="line"><a id="l00443" name="l00443"></a><span class="lineno">  443</span>                    <span class="keyword">const</span> <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *data,</div>
<div class="line"><a id="l00444" name="l00444"></a><span class="lineno">  444</span>                    <span class="keywordtype">size_t</span> length) {</div>
<div class="line"><a id="l00445" name="l00445"></a><span class="lineno">  445</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(data);</div>
<div class="line"><a id="l00446" name="l00446"></a><span class="lineno">  446</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(proto == <a class="code hl_define" href="pdu_8h.html#a1dd5fe6cc335ea31d49f3eb469a5990a">COAP_PROTO_TCP</a> || proto == <a class="code hl_define" href="pdu_8h.html#a6c9a1dd7b311e5a420e3a7c36b918a02">COAP_PROTO_TLS</a>);</div>
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno">  447</span>  <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(<a class="code hl_function" href="pdu_8c.html#a53c48f11ca3bc0d2106bd8b76f7430c8">coap_pdu_parse_header_size</a>(proto, data) &lt;= length );</div>
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno">  448</span> </div>
<div class="line"><a id="l00449" name="l00449"></a><span class="lineno">  449</span>  <span class="keywordtype">size_t</span> size = 0;</div>
<div class="line"><a id="l00450" name="l00450"></a><span class="lineno">  450</span> </div>
<div class="line"><a id="l00451" name="l00451"></a><span class="lineno">  451</span>  <span class="keywordflow">if</span> ((proto == <a class="code hl_define" href="pdu_8h.html#a1dd5fe6cc335ea31d49f3eb469a5990a">COAP_PROTO_TCP</a> || proto==<a class="code hl_define" href="pdu_8h.html#a6c9a1dd7b311e5a420e3a7c36b918a02">COAP_PROTO_TLS</a>) &amp;&amp; length &gt;= 1) {</div>
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno">  452</span>    <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> len = *data &gt;&gt; 4;</div>
<div class="line"><a id="l00453" name="l00453"></a><span class="lineno">  453</span>    <span class="keywordflow">if</span> (len &lt; 13) {</div>
<div class="line"><a id="l00454" name="l00454"></a><span class="lineno">  454</span>      size = len;</div>
<div class="line"><a id="l00455" name="l00455"></a><span class="lineno">  455</span>    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (length &gt;= 2) {</div>
<div class="line"><a id="l00456" name="l00456"></a><span class="lineno">  456</span>      <span class="keywordflow">if</span> (len==13) {</div>
<div class="line"><a id="l00457" name="l00457"></a><span class="lineno">  457</span>        size = (size_t)data[1] + <a class="code hl_define" href="pdu_8h.html#a0699fdab30ad7c9d875946691ce71ec5">COAP_MESSAGE_SIZE_OFFSET_TCP8</a>;</div>
<div class="line"><a id="l00458" name="l00458"></a><span class="lineno">  458</span>      } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (length &gt;= 3) {</div>
<div class="line"><a id="l00459" name="l00459"></a><span class="lineno">  459</span>        <span class="keywordflow">if</span> (len==14) {</div>
<div class="line"><a id="l00460" name="l00460"></a><span class="lineno">  460</span>          size = ((size_t)data[1] &lt;&lt; 8) + data[2] + <a class="code hl_define" href="pdu_8h.html#a9cf7ca17ad57bd10f72711c1dfd26816">COAP_MESSAGE_SIZE_OFFSET_TCP16</a>;</div>
<div class="line"><a id="l00461" name="l00461"></a><span class="lineno">  461</span>        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (length &gt;= 5) {</div>
<div class="line"><a id="l00462" name="l00462"></a><span class="lineno">  462</span>          size = ((size_t)data[1] &lt;&lt; 24) + ((size_t)data[2] &lt;&lt; 16)</div>
<div class="line"><a id="l00463" name="l00463"></a><span class="lineno">  463</span>               + ((size_t)data[3] &lt;&lt; 8) + data[4] + <a class="code hl_define" href="pdu_8h.html#aa60dcb2495491104cc4c0fc50267fed0">COAP_MESSAGE_SIZE_OFFSET_TCP32</a>;</div>
<div class="line"><a id="l00464" name="l00464"></a><span class="lineno">  464</span>        }</div>
<div class="line"><a id="l00465" name="l00465"></a><span class="lineno">  465</span>      }</div>
<div class="line"><a id="l00466" name="l00466"></a><span class="lineno">  466</span>    }</div>
<div class="line"><a id="l00467" name="l00467"></a><span class="lineno">  467</span>    size += data[0] &amp; 0x0f;</div>
<div class="line"><a id="l00468" name="l00468"></a><span class="lineno">  468</span>  }</div>
<div class="line"><a id="l00469" name="l00469"></a><span class="lineno">  469</span> </div>
<div class="line"><a id="l00470" name="l00470"></a><span class="lineno">  470</span>  <span class="keywordflow">return</span> size;</div>
<div class="line"><a id="l00471" name="l00471"></a><span class="lineno">  471</span>}</div>
</div>
<div class="line"><a id="l00472" name="l00472"></a><span class="lineno">  472</span> </div>
<div class="line"><a id="l00473" name="l00473"></a><span class="lineno">  473</span><span class="keywordtype">int</span></div>
<div class="foldopen" id="foldopen00474" data-start="{" data-end="}">
<div class="line"><a id="l00474" name="l00474"></a><span class="lineno"><a class="line" href="pdu_8c.html#a516ac8dae1f2fe33963f80cf15ec59a0">  474</a></span><a class="code hl_function" href="pdu_8c.html#a516ac8dae1f2fe33963f80cf15ec59a0">coap_pdu_parse_header</a>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu, <a class="code hl_typedef" href="pdu_8h.html#a9f23fe72ad67820dcdf888bb8b619dde">coap_proto_t</a> proto) {</div>
<div class="line"><a id="l00475" name="l00475"></a><span class="lineno">  475</span>  <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *hdr = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a>;</div>
<div class="line"><a id="l00476" name="l00476"></a><span class="lineno">  476</span>  <span class="keywordflow">if</span> (proto == <a class="code hl_define" href="pdu_8h.html#aeda5d0dcadd6cbb8c13e1950fcff787a">COAP_PROTO_UDP</a> || proto == <a class="code hl_define" href="pdu_8h.html#ac10ea7ae66e5e549b47854417311b560">COAP_PROTO_DTLS</a>) {</div>
<div class="line"><a id="l00477" name="l00477"></a><span class="lineno">  477</span>    <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a> == 4);</div>
<div class="line"><a id="l00478" name="l00478"></a><span class="lineno">  478</span>    <span class="keywordflow">if</span> ((hdr[0] &gt;&gt; 6) != <a class="code hl_define" href="pdu_8h.html#ac0c672474161e3066719c36e983a0228">COAP_DEFAULT_VERSION</a>) {</div>
<div class="line"><a id="l00479" name="l00479"></a><span class="lineno">  479</span>      <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446ab9f002c6ffbfd511da8090213227454e">LOG_DEBUG</a>, <span class="stringliteral">&quot;coap_pdu_parse: UDP version not supported\n&quot;</span>);</div>
<div class="line"><a id="l00480" name="l00480"></a><span class="lineno">  480</span>      <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00481" name="l00481"></a><span class="lineno">  481</span>    }</div>
<div class="line"><a id="l00482" name="l00482"></a><span class="lineno">  482</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a0d5796b82924c69852860053020d0684">type</a> = (hdr[0] &gt;&gt; 4) &amp; 0x03;</div>
<div class="line"><a id="l00483" name="l00483"></a><span class="lineno">  483</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a> = hdr[0] &amp; 0x0f;</div>
<div class="line"><a id="l00484" name="l00484"></a><span class="lineno">  484</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a69c774f85355eeacc4742355527a8097">code</a> = hdr[1];</div>
<div class="line"><a id="l00485" name="l00485"></a><span class="lineno">  485</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a65877a685b1f3428d3dc872af075ddc1">tid</a> = (uint16_t)hdr[2] &lt;&lt; 8 | hdr[3];</div>
<div class="line"><a id="l00486" name="l00486"></a><span class="lineno">  486</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (proto == <a class="code hl_define" href="pdu_8h.html#a1dd5fe6cc335ea31d49f3eb469a5990a">COAP_PROTO_TCP</a> || proto == <a class="code hl_define" href="pdu_8h.html#a6c9a1dd7b311e5a420e3a7c36b918a02">COAP_PROTO_TLS</a>) {</div>
<div class="line"><a id="l00487" name="l00487"></a><span class="lineno">  487</span>    <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a> &gt;= 2 &amp;&amp; pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a> &lt;= 6);</div>
<div class="line"><a id="l00488" name="l00488"></a><span class="lineno">  488</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a0d5796b82924c69852860053020d0684">type</a> = <a class="code hl_define" href="pdu_8h.html#ab6ad49de4b14e7cf5bd0a2a1a87eef2f">COAP_MESSAGE_CON</a>;</div>
<div class="line"><a id="l00489" name="l00489"></a><span class="lineno">  489</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a> = hdr[0] &amp; 0x0f;</div>
<div class="line"><a id="l00490" name="l00490"></a><span class="lineno">  490</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a69c774f85355eeacc4742355527a8097">code</a> = hdr[pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a>-1];</div>
<div class="line"><a id="l00491" name="l00491"></a><span class="lineno">  491</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a65877a685b1f3428d3dc872af075ddc1">tid</a> = 0;</div>
<div class="line"><a id="l00492" name="l00492"></a><span class="lineno">  492</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00493" name="l00493"></a><span class="lineno">  493</span>    <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446ab9f002c6ffbfd511da8090213227454e">LOG_DEBUG</a>, <span class="stringliteral">&quot;coap_pdu_parse: unsupported protocol\n&quot;</span>);</div>
<div class="line"><a id="l00494" name="l00494"></a><span class="lineno">  494</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00495" name="l00495"></a><span class="lineno">  495</span>  }</div>
<div class="line"><a id="l00496" name="l00496"></a><span class="lineno">  496</span>  <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a> &gt; pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a>) {</div>
<div class="line"><a id="l00497" name="l00497"></a><span class="lineno">  497</span>    <span class="comment">/* Invalid PDU provided - not wise to assert here though */</span></div>
<div class="line"><a id="l00498" name="l00498"></a><span class="lineno">  498</span>    <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446ab9f002c6ffbfd511da8090213227454e">LOG_DEBUG</a>, <span class="stringliteral">&quot;coap_pdu_parse: PDU header token size broken\n&quot;</span>);</div>
<div class="line"><a id="l00499" name="l00499"></a><span class="lineno">  499</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a> = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">alloc_size</a>;</div>
<div class="line"><a id="l00500" name="l00500"></a><span class="lineno">  500</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00501" name="l00501"></a><span class="lineno">  501</span>  }</div>
<div class="line"><a id="l00502" name="l00502"></a><span class="lineno">  502</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a id="l00503" name="l00503"></a><span class="lineno">  503</span>}</div>
</div>
<div class="line"><a id="l00504" name="l00504"></a><span class="lineno">  504</span> </div>
<div class="line"><a id="l00505" name="l00505"></a><span class="lineno">  505</span><span class="keywordtype">int</span></div>
<div class="foldopen" id="foldopen00506" data-start="{" data-end="}">
<div class="line"><a id="l00506" name="l00506"></a><span class="lineno"><a class="line" href="pdu_8c.html#aa7fbcbe0f8d7415e82447747abf31d51">  506</a></span><a class="code hl_function" href="pdu_8c.html#aa7fbcbe0f8d7415e82447747abf31d51">coap_pdu_parse_opt</a>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu) {</div>
<div class="line"><a id="l00507" name="l00507"></a><span class="lineno">  507</span> </div>
<div class="line"><a id="l00508" name="l00508"></a><span class="lineno">  508</span>  <span class="comment">/* sanity checks */</span></div>
<div class="line"><a id="l00509" name="l00509"></a><span class="lineno">  509</span>  <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a69c774f85355eeacc4742355527a8097">code</a> == 0) {</div>
<div class="line"><a id="l00510" name="l00510"></a><span class="lineno">  510</span>    <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> != 0 || pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a>) {</div>
<div class="line"><a id="l00511" name="l00511"></a><span class="lineno">  511</span>      <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446ab9f002c6ffbfd511da8090213227454e">LOG_DEBUG</a>, <span class="stringliteral">&quot;coap_pdu_parse: empty message is not empty\n&quot;</span>);</div>
<div class="line"><a id="l00512" name="l00512"></a><span class="lineno">  512</span>      <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00513" name="l00513"></a><span class="lineno">  513</span>    }</div>
<div class="line"><a id="l00514" name="l00514"></a><span class="lineno">  514</span>  }</div>
<div class="line"><a id="l00515" name="l00515"></a><span class="lineno">  515</span> </div>
<div class="line"><a id="l00516" name="l00516"></a><span class="lineno">  516</span>  <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a> &gt; pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> || pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a> &gt; 8) {</div>
<div class="line"><a id="l00517" name="l00517"></a><span class="lineno">  517</span>    <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446ab9f002c6ffbfd511da8090213227454e">LOG_DEBUG</a>, <span class="stringliteral">&quot;coap_pdu_parse: invalid Token\n&quot;</span>);</div>
<div class="line"><a id="l00518" name="l00518"></a><span class="lineno">  518</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00519" name="l00519"></a><span class="lineno">  519</span>  }</div>
<div class="line"><a id="l00520" name="l00520"></a><span class="lineno">  520</span> </div>
<div class="line"><a id="l00521" name="l00521"></a><span class="lineno">  521</span>  <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a69c774f85355eeacc4742355527a8097">code</a> == 0) {</div>
<div class="line"><a id="l00522" name="l00522"></a><span class="lineno">  522</span>    <span class="comment">/* empty packet */</span></div>
<div class="line"><a id="l00523" name="l00523"></a><span class="lineno">  523</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> = 0;</div>
<div class="line"><a id="l00524" name="l00524"></a><span class="lineno">  524</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> = NULL;</div>
<div class="line"><a id="l00525" name="l00525"></a><span class="lineno">  525</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00526" name="l00526"></a><span class="lineno">  526</span>    <span class="comment">/* skip header + token */</span></div>
<div class="line"><a id="l00527" name="l00527"></a><span class="lineno">  527</span>    <a class="code hl_typedef" href="option_8h.html#a963ad4994625360a5ac70d9df2ab5412">coap_opt_t</a> *opt = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> + pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a>;</div>
<div class="line"><a id="l00528" name="l00528"></a><span class="lineno">  528</span>    <span class="keywordtype">size_t</span> length = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a>;</div>
<div class="line"><a id="l00529" name="l00529"></a><span class="lineno">  529</span> </div>
<div class="line"><a id="l00530" name="l00530"></a><span class="lineno">  530</span>    <span class="keywordflow">while</span> (length &gt; 0 &amp;&amp; *opt != <a class="code hl_define" href="pdu_8h.html#ad46f0093ab0b2b969651b0d45d9bf8d0">COAP_PAYLOAD_START</a>) {</div>
<div class="line"><a id="l00531" name="l00531"></a><span class="lineno">  531</span>      <span class="keywordflow">if</span> ( !<a class="code hl_function" href="pdu_8c.html#a1a5660500af5276ede2c7472958f2826">next_option_safe</a>( &amp;opt, (<span class="keywordtype">size_t</span> *)&amp;length ) ) {</div>
<div class="line"><a id="l00532" name="l00532"></a><span class="lineno">  532</span>        <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446ab9f002c6ffbfd511da8090213227454e">LOG_DEBUG</a>, <span class="stringliteral">&quot;coap_pdu_parse: missing payload start code\n&quot;</span>);</div>
<div class="line"><a id="l00533" name="l00533"></a><span class="lineno">  533</span>        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00534" name="l00534"></a><span class="lineno">  534</span>      }</div>
<div class="line"><a id="l00535" name="l00535"></a><span class="lineno">  535</span>    }</div>
<div class="line"><a id="l00536" name="l00536"></a><span class="lineno">  536</span> </div>
<div class="line"><a id="l00537" name="l00537"></a><span class="lineno">  537</span>    <span class="keywordflow">if</span> (length &gt; 0) {</div>
<div class="line"><a id="l00538" name="l00538"></a><span class="lineno">  538</span>      <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(*opt == <a class="code hl_define" href="pdu_8h.html#ad46f0093ab0b2b969651b0d45d9bf8d0">COAP_PAYLOAD_START</a>);</div>
<div class="line"><a id="l00539" name="l00539"></a><span class="lineno">  539</span>      opt++; length--;</div>
<div class="line"><a id="l00540" name="l00540"></a><span class="lineno">  540</span> </div>
<div class="line"><a id="l00541" name="l00541"></a><span class="lineno">  541</span>      <span class="keywordflow">if</span> (length == 0) {</div>
<div class="line"><a id="l00542" name="l00542"></a><span class="lineno">  542</span>        <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446ab9f002c6ffbfd511da8090213227454e">LOG_DEBUG</a>,</div>
<div class="line"><a id="l00543" name="l00543"></a><span class="lineno">  543</span>                 <span class="stringliteral">&quot;coap_pdu_parse: message ending in payload start marker\n&quot;</span>);</div>
<div class="line"><a id="l00544" name="l00544"></a><span class="lineno">  544</span>        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00545" name="l00545"></a><span class="lineno">  545</span>      }</div>
<div class="line"><a id="l00546" name="l00546"></a><span class="lineno">  546</span>    }</div>
<div class="line"><a id="l00547" name="l00547"></a><span class="lineno">  547</span>    <span class="keywordflow">if</span> (length &gt; 0)</div>
<div class="line"><a id="l00548" name="l00548"></a><span class="lineno">  548</span>                pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>*)opt;</div>
<div class="line"><a id="l00549" name="l00549"></a><span class="lineno">  549</span>    <span class="keywordflow">else</span></div>
<div class="line"><a id="l00550" name="l00550"></a><span class="lineno">  550</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">data</a> = NULL;</div>
<div class="line"><a id="l00551" name="l00551"></a><span class="lineno">  551</span>  }</div>
<div class="line"><a id="l00552" name="l00552"></a><span class="lineno">  552</span> </div>
<div class="line"><a id="l00553" name="l00553"></a><span class="lineno">  553</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a id="l00554" name="l00554"></a><span class="lineno">  554</span>}</div>
</div>
<div class="line"><a id="l00555" name="l00555"></a><span class="lineno">  555</span> </div>
<div class="line"><a id="l00556" name="l00556"></a><span class="lineno">  556</span><span class="keywordtype">int</span></div>
<div class="foldopen" id="foldopen00557" data-start="{" data-end="}">
<div class="line"><a id="l00557" name="l00557"></a><span class="lineno"><a class="line" href="pdu_8c.html#ab9981ea277da8bc4e5c4f82d6ca4c006">  557</a></span><a class="code hl_function" href="pdu_8c.html#ab9981ea277da8bc4e5c4f82d6ca4c006">coap_pdu_parse</a>(<a class="code hl_typedef" href="pdu_8h.html#a9f23fe72ad67820dcdf888bb8b619dde">coap_proto_t</a> proto,</div>
<div class="line"><a id="l00558" name="l00558"></a><span class="lineno">  558</span>               <span class="keyword">const</span> <a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a> *data,</div>
<div class="line"><a id="l00559" name="l00559"></a><span class="lineno">  559</span>               <span class="keywordtype">size_t</span> length,</div>
<div class="line"><a id="l00560" name="l00560"></a><span class="lineno">  560</span>               <a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu)</div>
<div class="line"><a id="l00561" name="l00561"></a><span class="lineno">  561</span>{</div>
<div class="line"><a id="l00562" name="l00562"></a><span class="lineno">  562</span>  <span class="keywordtype">size_t</span> hdr_size;</div>
<div class="line"><a id="l00563" name="l00563"></a><span class="lineno">  563</span> </div>
<div class="line"><a id="l00564" name="l00564"></a><span class="lineno">  564</span>  <span class="keywordflow">if</span> (length == 0)</div>
<div class="line"><a id="l00565" name="l00565"></a><span class="lineno">  565</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00566" name="l00566"></a><span class="lineno">  566</span>  hdr_size = <a class="code hl_function" href="pdu_8c.html#a53c48f11ca3bc0d2106bd8b76f7430c8">coap_pdu_parse_header_size</a>(proto, data);</div>
<div class="line"><a id="l00567" name="l00567"></a><span class="lineno">  567</span>  <span class="keywordflow">if</span> (!hdr_size || hdr_size &gt; length)</div>
<div class="line"><a id="l00568" name="l00568"></a><span class="lineno">  568</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00569" name="l00569"></a><span class="lineno">  569</span>  <span class="keywordflow">if</span> (hdr_size &gt; pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a>)</div>
<div class="line"><a id="l00570" name="l00570"></a><span class="lineno">  570</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00571" name="l00571"></a><span class="lineno">  571</span>  <span class="keywordflow">if</span> (!<a class="code hl_function" href="pdu_8c.html#add46ce956878a4121e8887b84c6d4a6b">coap_pdu_resize</a>(pdu, length - hdr_size))</div>
<div class="line"><a id="l00572" name="l00572"></a><span class="lineno">  572</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00573" name="l00573"></a><span class="lineno">  573</span><span class="preprocessor">#ifndef WITH_LWIP</span></div>
<div class="line"><a id="l00574" name="l00574"></a><span class="lineno">  574</span>  memcpy(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a> - hdr_size, data, length);</div>
<div class="line"><a id="l00575" name="l00575"></a><span class="lineno">  575</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00576" name="l00576"></a><span class="lineno">  576</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a> = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)hdr_size;</div>
<div class="line"><a id="l00577" name="l00577"></a><span class="lineno">  577</span>  pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> = length - hdr_size;</div>
<div class="line"><a id="l00578" name="l00578"></a><span class="lineno">  578</span>  <span class="keywordflow">return</span> <a class="code hl_function" href="pdu_8c.html#a516ac8dae1f2fe33963f80cf15ec59a0">coap_pdu_parse_header</a>(pdu, proto) &amp;&amp; <a class="code hl_function" href="pdu_8c.html#aa7fbcbe0f8d7415e82447747abf31d51">coap_pdu_parse_opt</a>(pdu);</div>
<div class="line"><a id="l00579" name="l00579"></a><span class="lineno">  579</span>}</div>
</div>
<div class="line"><a id="l00580" name="l00580"></a><span class="lineno">  580</span> </div>
<div class="line"><a id="l00581" name="l00581"></a><span class="lineno">  581</span><span class="keywordtype">size_t</span></div>
<div class="foldopen" id="foldopen00582" data-start="{" data-end="}">
<div class="line"><a id="l00582" name="l00582"></a><span class="lineno"><a class="line" href="pdu_8c.html#ab5e81fe5717f977c62b7ef427d946c35">  582</a></span><a class="code hl_function" href="pdu_8c.html#ab5e81fe5717f977c62b7ef427d946c35">coap_pdu_encode_header</a>(<a class="code hl_struct" href="structcoap__pdu__t.html">coap_pdu_t</a> *pdu, <a class="code hl_typedef" href="pdu_8h.html#a9f23fe72ad67820dcdf888bb8b619dde">coap_proto_t</a> proto) {</div>
<div class="line"><a id="l00583" name="l00583"></a><span class="lineno">  583</span>  <span class="keywordflow">if</span> (proto == <a class="code hl_define" href="pdu_8h.html#aeda5d0dcadd6cbb8c13e1950fcff787a">COAP_PROTO_UDP</a> || proto == <a class="code hl_define" href="pdu_8h.html#ac10ea7ae66e5e549b47854417311b560">COAP_PROTO_DTLS</a>) {</div>
<div class="line"><a id="l00584" name="l00584"></a><span class="lineno">  584</span>    <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> &gt;= 4);</div>
<div class="line"><a id="l00585" name="l00585"></a><span class="lineno">  585</span>    <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> &lt; 4) {</div>
<div class="line"><a id="l00586" name="l00586"></a><span class="lineno">  586</span>      <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>,</div>
<div class="line"><a id="l00587" name="l00587"></a><span class="lineno">  587</span>           <span class="stringliteral">&quot;coap_pdu_encode_header: not enough space for UDP-style header\n&quot;</span>);</div>
<div class="line"><a id="l00588" name="l00588"></a><span class="lineno">  588</span>      <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00589" name="l00589"></a><span class="lineno">  589</span>    }</div>
<div class="line"><a id="l00590" name="l00590"></a><span class="lineno">  590</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-4] = <a class="code hl_define" href="pdu_8h.html#ac0c672474161e3066719c36e983a0228">COAP_DEFAULT_VERSION</a> &lt;&lt; 6</div>
<div class="line"><a id="l00591" name="l00591"></a><span class="lineno">  591</span>                   | pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a0d5796b82924c69852860053020d0684">type</a> &lt;&lt; 4</div>
<div class="line"><a id="l00592" name="l00592"></a><span class="lineno">  592</span>                   | pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a>;</div>
<div class="line"><a id="l00593" name="l00593"></a><span class="lineno">  593</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-3] = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a69c774f85355eeacc4742355527a8097">code</a>;</div>
<div class="line"><a id="l00594" name="l00594"></a><span class="lineno">  594</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-2] = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a65877a685b1f3428d3dc872af075ddc1">tid</a> &gt;&gt; 8);</div>
<div class="line"><a id="l00595" name="l00595"></a><span class="lineno">  595</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-1] = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a65877a685b1f3428d3dc872af075ddc1">tid</a>);</div>
<div class="line"><a id="l00596" name="l00596"></a><span class="lineno">  596</span>    pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a> = 4;</div>
<div class="line"><a id="l00597" name="l00597"></a><span class="lineno">  597</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (proto == <a class="code hl_define" href="pdu_8h.html#a1dd5fe6cc335ea31d49f3eb469a5990a">COAP_PROTO_TCP</a> || proto == <a class="code hl_define" href="pdu_8h.html#a6c9a1dd7b311e5a420e3a7c36b918a02">COAP_PROTO_TLS</a>) {</div>
<div class="line"><a id="l00598" name="l00598"></a><span class="lineno">  598</span>    <span class="keywordtype">size_t</span> len;</div>
<div class="line"><a id="l00599" name="l00599"></a><span class="lineno">  599</span>    <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> &gt;= pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a>);</div>
<div class="line"><a id="l00600" name="l00600"></a><span class="lineno">  600</span>    <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> &lt; pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a>) {</div>
<div class="line"><a id="l00601" name="l00601"></a><span class="lineno">  601</span>      <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>, <span class="stringliteral">&quot;coap_pdu_encode_header: corrupted PDU\n&quot;</span>);</div>
<div class="line"><a id="l00602" name="l00602"></a><span class="lineno">  602</span>      <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00603" name="l00603"></a><span class="lineno">  603</span>    }</div>
<div class="line"><a id="l00604" name="l00604"></a><span class="lineno">  604</span>    len = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">used_size</a> - pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a>;</div>
<div class="line"><a id="l00605" name="l00605"></a><span class="lineno">  605</span>    <span class="keywordflow">if</span> (len &lt;= <a class="code hl_define" href="pdu_8h.html#a8f9814965b00b7a98ae8b2a10b8be8b6">COAP_MAX_MESSAGE_SIZE_TCP0</a>) {</div>
<div class="line"><a id="l00606" name="l00606"></a><span class="lineno">  606</span>      <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> &gt;= 2);</div>
<div class="line"><a id="l00607" name="l00607"></a><span class="lineno">  607</span>      <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> &lt; 2) {</div>
<div class="line"><a id="l00608" name="l00608"></a><span class="lineno">  608</span>        <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>,</div>
<div class="line"><a id="l00609" name="l00609"></a><span class="lineno">  609</span>              <span class="stringliteral">&quot;coap_pdu_encode_header: not enough space for TCP0 header\n&quot;</span>);</div>
<div class="line"><a id="l00610" name="l00610"></a><span class="lineno">  610</span>        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00611" name="l00611"></a><span class="lineno">  611</span>      }</div>
<div class="line"><a id="l00612" name="l00612"></a><span class="lineno">  612</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-2] = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)len &lt;&lt; 4</div>
<div class="line"><a id="l00613" name="l00613"></a><span class="lineno">  613</span>                     | pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a>;</div>
<div class="line"><a id="l00614" name="l00614"></a><span class="lineno">  614</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-1] = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a69c774f85355eeacc4742355527a8097">code</a>;</div>
<div class="line"><a id="l00615" name="l00615"></a><span class="lineno">  615</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a> = 2;</div>
<div class="line"><a id="l00616" name="l00616"></a><span class="lineno">  616</span>    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (len &lt;= <a class="code hl_define" href="pdu_8h.html#a7cda9d9606a85c72bb218ab9b1fbb3a8">COAP_MAX_MESSAGE_SIZE_TCP8</a>) {</div>
<div class="line"><a id="l00617" name="l00617"></a><span class="lineno">  617</span>      <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> &gt;= 3);</div>
<div class="line"><a id="l00618" name="l00618"></a><span class="lineno">  618</span>      <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> &lt; 3) {</div>
<div class="line"><a id="l00619" name="l00619"></a><span class="lineno">  619</span>        <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>,</div>
<div class="line"><a id="l00620" name="l00620"></a><span class="lineno">  620</span>              <span class="stringliteral">&quot;coap_pdu_encode_header: not enough space for TCP8 header\n&quot;</span>);</div>
<div class="line"><a id="l00621" name="l00621"></a><span class="lineno">  621</span>        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00622" name="l00622"></a><span class="lineno">  622</span>      }</div>
<div class="line"><a id="l00623" name="l00623"></a><span class="lineno">  623</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-3] = 13 &lt;&lt; 4 | pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a>;</div>
<div class="line"><a id="l00624" name="l00624"></a><span class="lineno">  624</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-2] = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)(len - <a class="code hl_define" href="pdu_8h.html#a0699fdab30ad7c9d875946691ce71ec5">COAP_MESSAGE_SIZE_OFFSET_TCP8</a>);</div>
<div class="line"><a id="l00625" name="l00625"></a><span class="lineno">  625</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-1] = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a69c774f85355eeacc4742355527a8097">code</a>;</div>
<div class="line"><a id="l00626" name="l00626"></a><span class="lineno">  626</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a> = 3;</div>
<div class="line"><a id="l00627" name="l00627"></a><span class="lineno">  627</span>    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (len &lt;= <a class="code hl_define" href="pdu_8h.html#aed8d3a898b778a92637d2f2ef63d7fa3">COAP_MAX_MESSAGE_SIZE_TCP16</a>) {</div>
<div class="line"><a id="l00628" name="l00628"></a><span class="lineno">  628</span>      <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> &gt;= 4);</div>
<div class="line"><a id="l00629" name="l00629"></a><span class="lineno">  629</span>      <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> &lt; 4) {</div>
<div class="line"><a id="l00630" name="l00630"></a><span class="lineno">  630</span>        <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>,</div>
<div class="line"><a id="l00631" name="l00631"></a><span class="lineno">  631</span>              <span class="stringliteral">&quot;coap_pdu_encode_header: not enough space for TCP16 header\n&quot;</span>);</div>
<div class="line"><a id="l00632" name="l00632"></a><span class="lineno">  632</span>        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00633" name="l00633"></a><span class="lineno">  633</span>      }</div>
<div class="line"><a id="l00634" name="l00634"></a><span class="lineno">  634</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-4] = 14 &lt;&lt; 4 | pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a>;</div>
<div class="line"><a id="l00635" name="l00635"></a><span class="lineno">  635</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-3] = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)((len - <a class="code hl_define" href="pdu_8h.html#a9cf7ca17ad57bd10f72711c1dfd26816">COAP_MESSAGE_SIZE_OFFSET_TCP16</a>) &gt;&gt; 8);</div>
<div class="line"><a id="l00636" name="l00636"></a><span class="lineno">  636</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-2] = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)(len - <a class="code hl_define" href="pdu_8h.html#a9cf7ca17ad57bd10f72711c1dfd26816">COAP_MESSAGE_SIZE_OFFSET_TCP16</a>);</div>
<div class="line"><a id="l00637" name="l00637"></a><span class="lineno">  637</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-1] = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a69c774f85355eeacc4742355527a8097">code</a>;</div>
<div class="line"><a id="l00638" name="l00638"></a><span class="lineno">  638</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a> = 4;</div>
<div class="line"><a id="l00639" name="l00639"></a><span class="lineno">  639</span>    } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00640" name="l00640"></a><span class="lineno">  640</span>      <a class="code hl_define" href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a>(pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> &gt;= 6);</div>
<div class="line"><a id="l00641" name="l00641"></a><span class="lineno">  641</span>      <span class="keywordflow">if</span> (pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">max_hdr_size</a> &lt; 6) {</div>
<div class="line"><a id="l00642" name="l00642"></a><span class="lineno">  642</span>        <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>,</div>
<div class="line"><a id="l00643" name="l00643"></a><span class="lineno">  643</span>              <span class="stringliteral">&quot;coap_pdu_encode_header: not enough space for TCP32 header\n&quot;</span>);</div>
<div class="line"><a id="l00644" name="l00644"></a><span class="lineno">  644</span>        <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00645" name="l00645"></a><span class="lineno">  645</span>      }</div>
<div class="line"><a id="l00646" name="l00646"></a><span class="lineno">  646</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-6] = 15 &lt;&lt; 4 | pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">token_length</a>;</div>
<div class="line"><a id="l00647" name="l00647"></a><span class="lineno">  647</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-5] = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)((len - <a class="code hl_define" href="pdu_8h.html#aa60dcb2495491104cc4c0fc50267fed0">COAP_MESSAGE_SIZE_OFFSET_TCP32</a>) &gt;&gt; 24);</div>
<div class="line"><a id="l00648" name="l00648"></a><span class="lineno">  648</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-4] = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)((len - <a class="code hl_define" href="pdu_8h.html#aa60dcb2495491104cc4c0fc50267fed0">COAP_MESSAGE_SIZE_OFFSET_TCP32</a>) &gt;&gt; 16);</div>
<div class="line"><a id="l00649" name="l00649"></a><span class="lineno">  649</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-3] = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)((len - <a class="code hl_define" href="pdu_8h.html#aa60dcb2495491104cc4c0fc50267fed0">COAP_MESSAGE_SIZE_OFFSET_TCP32</a>) &gt;&gt; 8);</div>
<div class="line"><a id="l00650" name="l00650"></a><span class="lineno">  650</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-2] = (<a class="code hl_typedef" href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a>)(len - <a class="code hl_define" href="pdu_8h.html#aa60dcb2495491104cc4c0fc50267fed0">COAP_MESSAGE_SIZE_OFFSET_TCP32</a>);</div>
<div class="line"><a id="l00651" name="l00651"></a><span class="lineno">  651</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">token</a>[-1] = pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a69c774f85355eeacc4742355527a8097">code</a>;</div>
<div class="line"><a id="l00652" name="l00652"></a><span class="lineno">  652</span>      pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a> = 6;</div>
<div class="line"><a id="l00653" name="l00653"></a><span class="lineno">  653</span>    }</div>
<div class="line"><a id="l00654" name="l00654"></a><span class="lineno">  654</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00655" name="l00655"></a><span class="lineno">  655</span>    <a class="code hl_define" href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a>(<a class="code hl_enumvalue" href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a>, <span class="stringliteral">&quot;coap_pdu_encode_header: unsupported protocol\n&quot;</span>);</div>
<div class="line"><a id="l00656" name="l00656"></a><span class="lineno">  656</span>  }</div>
<div class="line"><a id="l00657" name="l00657"></a><span class="lineno">  657</span>  <span class="keywordflow">return</span> pdu-&gt;<a class="code hl_variable" href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">hdr_size</a>;</div>
<div class="line"><a id="l00658" name="l00658"></a><span class="lineno">  658</span>}</div>
</div>
<div class="ttc" id="acoap__debug_8h_html"><div class="ttname"><a href="coap__debug_8h.html">coap_debug.h</a></div></div>
<div class="ttc" id="acoap__session_8c_html_a4368ee622c681bf7cf0b7cfe99c8ab37"><div class="ttname"><a href="coap__session_8c.html#a4368ee622c681bf7cf0b7cfe99c8ab37">coap_session_max_pdu_size</a></div><div class="ttdeci">size_t coap_session_max_pdu_size(const coap_session_t *session)</div><div class="ttdoc">Get maximum acceptable PDU size.</div><div class="ttdef"><b>Definition</b> <a href="coap__session_8c_source.html#l00189">coap_session.c:189</a></div></div>
<div class="ttc" id="acoap__session_8h_html"><div class="ttname"><a href="coap__session_8h.html">coap_session.h</a></div></div>
<div class="ttc" id="aencode_8h_html"><div class="ttname"><a href="encode_8h.html">encode.h</a></div></div>
<div class="ttc" id="agroup__logging_html_gaff2785484e756c8ec2fce408f9b81f0f"><div class="ttname"><a href="group__logging.html#gaff2785484e756c8ec2fce408f9b81f0f">coap_log</a></div><div class="ttdeci">#define coap_log(level,...)</div><div class="ttdoc">Logging function.</div><div class="ttdef"><b>Definition</b> <a href="coap__debug_8h_source.html#l00122">coap_debug.h:122</a></div></div>
<div class="ttc" id="agroup__logging_html_gga53c7b97a7af4d62d8c1678d658cc7446a3537fbf756308b6267dd4354615eb413"><div class="ttname"><a href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a3537fbf756308b6267dd4354615eb413">LOG_CRIT</a></div><div class="ttdeci">@ LOG_CRIT</div><div class="ttdoc">Critical.</div><div class="ttdef"><b>Definition</b> <a href="coap__debug_8h_source.html#l00044">coap_debug.h:44</a></div></div>
<div class="ttc" id="agroup__logging_html_gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400"><div class="ttname"><a href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446a8f6fe15bfe15104da6d1b360194a5400">LOG_WARNING</a></div><div class="ttdeci">@ LOG_WARNING</div><div class="ttdoc">Warning.</div><div class="ttdef"><b>Definition</b> <a href="coap__debug_8h_source.html#l00046">coap_debug.h:46</a></div></div>
<div class="ttc" id="agroup__logging_html_gga53c7b97a7af4d62d8c1678d658cc7446ab9f002c6ffbfd511da8090213227454e"><div class="ttname"><a href="group__logging.html#gga53c7b97a7af4d62d8c1678d658cc7446ab9f002c6ffbfd511da8090213227454e">LOG_DEBUG</a></div><div class="ttdeci">@ LOG_DEBUG</div><div class="ttdoc">Debug.</div><div class="ttdef"><b>Definition</b> <a href="coap__debug_8h_source.html#l00050">coap_debug.h:49</a></div></div>
<div class="ttc" id="agroup__opt__filter_html_ga358cb455deaefca1b1234298f018c9ab"><div class="ttname"><a href="group__opt__filter.html#ga358cb455deaefca1b1234298f018c9ab">coap_opt_encode</a></div><div class="ttdeci">size_t coap_opt_encode(coap_opt_t *opt, size_t maxlen, uint16_t delta, const uint8_t *val, size_t length)</div><div class="ttdoc">Encodes option with given delta into opt.</div><div class="ttdef"><b>Definition</b> <a href="option_8c_source.html#l00409">option.c:409</a></div></div>
<div class="ttc" id="agroup__opt__filter_html_ga55f19454026048e906139d575feddecb"><div class="ttname"><a href="group__opt__filter.html#ga55f19454026048e906139d575feddecb">coap_opt_encode_size</a></div><div class="ttdeci">size_t coap_opt_encode_size(uint16_t delta, size_t length)</div><div class="ttdoc">Compute storage bytes needed for an option with given delta and length.</div><div class="ttdef"><b>Definition</b> <a href="option_8c_source.html#l00388">option.c:388</a></div></div>
<div class="ttc" id="alibcoap_8h_html"><div class="ttname"><a href="libcoap_8h.html">libcoap.h</a></div></div>
<div class="ttc" id="amem_8c_html_a3d4ae9c092e117c836f52dc7d7cee574"><div class="ttname"><a href="mem_8c.html#a3d4ae9c092e117c836f52dc7d7cee574">assert</a></div><div class="ttdeci">#define assert(...)</div><div class="ttdef"><b>Definition</b> <a href="mem_8c_source.html#l00018">mem.c:18</a></div></div>
<div class="ttc" id="amem_8h_html"><div class="ttname"><a href="mem_8h.html">mem.h</a></div></div>
<div class="ttc" id="amem_8h_html_a703fa791ab7a14ff983df73b15e9c620a7442ae365f092f7aa0e516e6d67e7740"><div class="ttname"><a href="mem_8h.html#a703fa791ab7a14ff983df73b15e9c620a7442ae365f092f7aa0e516e6d67e7740">COAP_PDU</a></div><div class="ttdeci">@ COAP_PDU</div><div class="ttdef"><b>Definition</b> <a href="mem_8h_source.html#l00037">mem.h:37</a></div></div>
<div class="ttc" id="amem_8h_html_a703fa791ab7a14ff983df73b15e9c620ac7bb2f8183a3ed5a92a3e085b542f42f"><div class="ttname"><a href="mem_8h.html#a703fa791ab7a14ff983df73b15e9c620ac7bb2f8183a3ed5a92a3e085b542f42f">COAP_PDU_BUF</a></div><div class="ttdeci">@ COAP_PDU_BUF</div><div class="ttdef"><b>Definition</b> <a href="mem_8h_source.html#l00038">mem.h:38</a></div></div>
<div class="ttc" id="amem_8h_html_a9f9fd8d6cf24f9c45a5501aeba5acaf9"><div class="ttname"><a href="mem_8h.html#a9f9fd8d6cf24f9c45a5501aeba5acaf9">coap_malloc_type</a></div><div class="ttdeci">void * coap_malloc_type(coap_memory_tag_t type, size_t size)</div><div class="ttdoc">Allocates a chunk of size bytes and returns a pointer to the newly allocated memory.</div></div>
<div class="ttc" id="amem_8h_html_ae7214e0c73a4d4290525873e739ed422"><div class="ttname"><a href="mem_8h.html#ae7214e0c73a4d4290525873e739ed422">coap_free_type</a></div><div class="ttdeci">void coap_free_type(coap_memory_tag_t type, void *p)</div><div class="ttdoc">Releases the memory that was allocated by coap_malloc_type().</div></div>
<div class="ttc" id="aoption_8c_html_a11de99f50cc9f5a34fd9e4d121ecfd13"><div class="ttname"><a href="option_8c.html#a11de99f50cc9f5a34fd9e4d121ecfd13">coap_opt_parse</a></div><div class="ttdeci">size_t coap_opt_parse(const coap_opt_t *opt, size_t length, coap_option_t *result)</div><div class="ttdoc">Parses the option pointed to by opt into result.</div><div class="ttdef"><b>Definition</b> <a href="option_8c_source.html#l00046">option.c:46</a></div></div>
<div class="ttc" id="aoption_8h_html"><div class="ttname"><a href="option_8h.html">option.h</a></div><div class="ttdoc">Helpers for handling options in CoAP PDUs.</div></div>
<div class="ttc" id="aoption_8h_html_a963ad4994625360a5ac70d9df2ab5412"><div class="ttname"><a href="option_8h.html#a963ad4994625360a5ac70d9df2ab5412">coap_opt_t</a></div><div class="ttdeci">uint8_t coap_opt_t</div><div class="ttdoc">Use byte-oriented access methods here because sliding a complex struct coap_opt_t over the data buffe...</div><div class="ttdef"><b>Definition</b> <a href="option_8h_source.html#l00025">option.h:25</a></div></div>
<div class="ttc" id="apdu_8c_html_a0820d2413f167cd92f8267bf0aaa6ecb"><div class="ttname"><a href="pdu_8c.html#a0820d2413f167cd92f8267bf0aaa6ecb">coap_response_phrase</a></div><div class="ttdeci">const char * coap_response_phrase(unsigned char code)</div><div class="ttdoc">Returns a human-readable response phrase for the specified CoAP response code.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00384">pdu.c:384</a></div></div>
<div class="ttc" id="apdu_8c_html_a1a5660500af5276ede2c7472958f2826"><div class="ttname"><a href="pdu_8c.html#a1a5660500af5276ede2c7472958f2826">next_option_safe</a></div><div class="ttdeci">static size_t next_option_safe(coap_opt_t **optp, size_t *length)</div><div class="ttdoc">Advances *optp to next option if still in PDU.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00400">pdu.c:400</a></div></div>
<div class="ttc" id="apdu_8c_html_a3b73fa26504e7a8da604375d1146b7e3"><div class="ttname"><a href="pdu_8c.html#a3b73fa26504e7a8da604375d1146b7e3">coap_add_data_after</a></div><div class="ttdeci">uint8_t * coap_add_data_after(coap_pdu_t *pdu, size_t len)</div><div class="ttdoc">Adds given data to the pdu that is passed as first parameter but does not copyt it.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00314">pdu.c:314</a></div></div>
<div class="ttc" id="apdu_8c_html_a47b43066ecb3584af0c425b8ee97db20"><div class="ttname"><a href="pdu_8c.html#a47b43066ecb3584af0c425b8ee97db20">coap_add_option_later</a></div><div class="ttdeci">uint8_t * coap_add_option_later(coap_pdu_t *pdu, uint16_t type, size_t len)</div><div class="ttdoc">Adds option of given type to pdu that is passed as first parameter, but does not write a value.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00266">pdu.c:266</a></div></div>
<div class="ttc" id="apdu_8c_html_a48518e7e0d3c7b91a3a4efb3d6eac23c"><div class="ttname"><a href="pdu_8c.html#a48518e7e0d3c7b91a3a4efb3d6eac23c">coap_error</a></div><div class="ttdeci">error_desc_t coap_error[]</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00356">pdu.c:356</a></div></div>
<div class="ttc" id="apdu_8c_html_a48581f968a30ef4278702eb1c16b7a90"><div class="ttname"><a href="pdu_8c.html#a48581f968a30ef4278702eb1c16b7a90">coap_delete_pdu</a></div><div class="ttdeci">void coap_delete_pdu(coap_pdu_t *pdu)</div><div class="ttdoc">Dispose of an CoAP PDU and frees associated storage.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00141">pdu.c:141</a></div></div>
<div class="ttc" id="apdu_8c_html_a4f019ad11b0f633524175488aecbd7d1"><div class="ttname"><a href="pdu_8c.html#a4f019ad11b0f633524175488aecbd7d1">coap_pdu_init</a></div><div class="ttdeci">coap_pdu_t * coap_pdu_init(uint8_t type, uint8_t code, uint16_t tid, size_t size)</div><div class="ttdoc">Creates a new CoAP PDU with at least enough storage space for the given size maximum message size.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00091">pdu.c:91</a></div></div>
<div class="ttc" id="apdu_8c_html_a516ac8dae1f2fe33963f80cf15ec59a0"><div class="ttname"><a href="pdu_8c.html#a516ac8dae1f2fe33963f80cf15ec59a0">coap_pdu_parse_header</a></div><div class="ttdeci">int coap_pdu_parse_header(coap_pdu_t *pdu, coap_proto_t proto)</div><div class="ttdoc">Decode the protocol specific header for the specified PDU.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00474">pdu.c:474</a></div></div>
<div class="ttc" id="apdu_8c_html_a53c48f11ca3bc0d2106bd8b76f7430c8"><div class="ttname"><a href="pdu_8c.html#a53c48f11ca3bc0d2106bd8b76f7430c8">coap_pdu_parse_header_size</a></div><div class="ttdeci">size_t coap_pdu_parse_header_size(coap_proto_t proto, const uint8_t *data)</div><div class="ttdoc">Interprets data to determine the number of bytes in the header.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00419">pdu.c:419</a></div></div>
<div class="ttc" id="apdu_8c_html_a6701e5ec876a5ce59c7892f66d46c67b"><div class="ttname"><a href="pdu_8c.html#a6701e5ec876a5ce59c7892f66d46c67b">coap_get_data</a></div><div class="ttdeci">int coap_get_data(const coap_pdu_t *pdu, size_t *len, uint8_t **data)</div><div class="ttdoc">Retrieves the length and data pointer of specified PDU.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00332">pdu.c:332</a></div></div>
<div class="ttc" id="apdu_8c_html_a923f81168ccbbaac1a4ca50837d7be94"><div class="ttname"><a href="pdu_8c.html#a923f81168ccbbaac1a4ca50837d7be94">coap_add_token</a></div><div class="ttdeci">int coap_add_token(coap_pdu_t *pdu, size_t len, const uint8_t *data)</div><div class="ttdoc">Adds token of length len to pdu.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00205">pdu.c:205</a></div></div>
<div class="ttc" id="apdu_8c_html_a9dbdf354e2da5e80fea4c0d4a8df6d05"><div class="ttname"><a href="pdu_8c.html#a9dbdf354e2da5e80fea4c0d4a8df6d05">coap_pdu_clear</a></div><div class="ttdeci">void coap_pdu_clear(coap_pdu_t *pdu, size_t size)</div><div class="ttdoc">Clears any contents from pdu and resets used_size, and data pointers.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00046">pdu.c:46</a></div></div>
<div class="ttc" id="apdu_8c_html_aa1314f60fbc25733cfabaa975adc5aae"><div class="ttname"><a href="pdu_8c.html#aa1314f60fbc25733cfabaa975adc5aae">coap_add_option</a></div><div class="ttdeci">size_t coap_add_option(coap_pdu_t *pdu, uint16_t type, size_t len, const uint8_t *data)</div><div class="ttdoc">Adds option of given type to pdu that is passed as first parameter.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00229">pdu.c:229</a></div></div>
<div class="ttc" id="apdu_8c_html_aa7fbcbe0f8d7415e82447747abf31d51"><div class="ttname"><a href="pdu_8c.html#aa7fbcbe0f8d7415e82447747abf31d51">coap_pdu_parse_opt</a></div><div class="ttdeci">int coap_pdu_parse_opt(coap_pdu_t *pdu)</div><div class="ttdoc">Verify consistency in the given CoAP PDU structure and locate the data.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00506">pdu.c:506</a></div></div>
<div class="ttc" id="apdu_8c_html_ab5e81fe5717f977c62b7ef427d946c35"><div class="ttname"><a href="pdu_8c.html#ab5e81fe5717f977c62b7ef427d946c35">coap_pdu_encode_header</a></div><div class="ttdeci">size_t coap_pdu_encode_header(coap_pdu_t *pdu, coap_proto_t proto)</div><div class="ttdoc">Compose the protocol specific header for the specified PDU.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00582">pdu.c:582</a></div></div>
<div class="ttc" id="apdu_8c_html_ab9981ea277da8bc4e5c4f82d6ca4c006"><div class="ttname"><a href="pdu_8c.html#ab9981ea277da8bc4e5c4f82d6ca4c006">coap_pdu_parse</a></div><div class="ttdeci">int coap_pdu_parse(coap_proto_t proto, const uint8_t *data, size_t length, coap_pdu_t *pdu)</div><div class="ttdoc">Parses data into the CoAP PDU structure given in result.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00557">pdu.c:557</a></div></div>
<div class="ttc" id="apdu_8c_html_ac6afabdc09a49a433ee19d8a9486056d"><div class="ttname"><a href="pdu_8c.html#ac6afabdc09a49a433ee19d8a9486056d">min</a></div><div class="ttdeci">#define min(a, b)</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00038">pdu.c:38</a></div></div>
<div class="ttc" id="apdu_8c_html_ad9460a91b9a9747bc85ff8e48a00f4d1"><div class="ttname"><a href="pdu_8c.html#ad9460a91b9a9747bc85ff8e48a00f4d1">coap_pdu_parse_size</a></div><div class="ttdeci">size_t coap_pdu_parse_size(coap_proto_t proto, const uint8_t *data, size_t length)</div><div class="ttdoc">Parses data to extract the message size.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00442">pdu.c:442</a></div></div>
<div class="ttc" id="apdu_8c_html_add46ce956878a4121e8887b84c6d4a6b"><div class="ttname"><a href="pdu_8c.html#add46ce956878a4121e8887b84c6d4a6b">coap_pdu_resize</a></div><div class="ttdeci">int coap_pdu_resize(coap_pdu_t *pdu, size_t new_size)</div><div class="ttdoc">Dynamically grows the size of pdu to new_size.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00154">pdu.c:154</a></div></div>
<div class="ttc" id="apdu_8c_html_ade1a728d3049d57703d805e71d0a38dd"><div class="ttname"><a href="pdu_8c.html#ade1a728d3049d57703d805e71d0a38dd">coap_new_pdu</a></div><div class="ttdeci">coap_pdu_t * coap_new_pdu(const struct coap_session_t *session)</div><div class="ttdoc">Creates a new CoAP PDU.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00131">pdu.c:131</a></div></div>
<div class="ttc" id="apdu_8c_html_af25c1916c60fdcf35cd4e178aebbb867"><div class="ttname"><a href="pdu_8c.html#af25c1916c60fdcf35cd4e178aebbb867">coap_pdu_check_resize</a></div><div class="ttdeci">static int coap_pdu_check_resize(coap_pdu_t *pdu, size_t size)</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00188">pdu.c:188</a></div></div>
<div class="ttc" id="apdu_8c_html_af71a3f810ab9f0f657c25c425826af40"><div class="ttname"><a href="pdu_8c.html#af71a3f810ab9f0f657c25c425826af40">coap_add_data</a></div><div class="ttdeci">int coap_add_data(coap_pdu_t *pdu, size_t len, const uint8_t *data)</div><div class="ttdoc">Adds given data to the pdu that is passed as first parameter.</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00302">pdu.c:302</a></div></div>
<div class="ttc" id="apdu_8c_html_affe776513b24d84b39af8ab0930fef7f"><div class="ttname"><a href="pdu_8c.html#affe776513b24d84b39af8ab0930fef7f">max</a></div><div class="ttdeci">#define max(a, b)</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00042">pdu.c:42</a></div></div>
<div class="ttc" id="apdu_8h_html"><div class="ttname"><a href="pdu_8h.html">pdu.h</a></div><div class="ttdoc">Pre-defined constants that reflect defaults for CoAP.</div></div>
<div class="ttc" id="apdu_8h_html_a0699fdab30ad7c9d875946691ce71ec5"><div class="ttname"><a href="pdu_8h.html#a0699fdab30ad7c9d875946691ce71ec5">COAP_MESSAGE_SIZE_OFFSET_TCP8</a></div><div class="ttdeci">#define COAP_MESSAGE_SIZE_OFFSET_TCP8</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00036">pdu.h:36</a></div></div>
<div class="ttc" id="apdu_8h_html_a1dd5fe6cc335ea31d49f3eb469a5990a"><div class="ttname"><a href="pdu_8h.html#a1dd5fe6cc335ea31d49f3eb469a5990a">COAP_PROTO_TCP</a></div><div class="ttdeci">#define COAP_PROTO_TCP</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00344">pdu.h:344</a></div></div>
<div class="ttc" id="apdu_8h_html_a3ad0069e1ed066d9f49b570446a9b847"><div class="ttname"><a href="pdu_8h.html#a3ad0069e1ed066d9f49b570446a9b847">COAP_PDU_MAX_UDP_HEADER_SIZE</a></div><div class="ttdeci">#define COAP_PDU_MAX_UDP_HEADER_SIZE</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00315">pdu.h:315</a></div></div>
<div class="ttc" id="apdu_8h_html_a651de743c1ff3168c875820cf327b1d6"><div class="ttname"><a href="pdu_8h.html#a651de743c1ff3168c875820cf327b1d6">COAP_RESPONSE_CODE</a></div><div class="ttdeci">#define COAP_RESPONSE_CODE(N)</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00132">pdu.h:132</a></div></div>
<div class="ttc" id="apdu_8h_html_a682638452038ffdfbf08ce4875f95a2f"><div class="ttname"><a href="pdu_8h.html#a682638452038ffdfbf08ce4875f95a2f">COAP_PDU_MAX_TCP_HEADER_SIZE</a></div><div class="ttdeci">#define COAP_PDU_MAX_TCP_HEADER_SIZE</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00316">pdu.h:316</a></div></div>
<div class="ttc" id="apdu_8h_html_a6c9a1dd7b311e5a420e3a7c36b918a02"><div class="ttname"><a href="pdu_8h.html#a6c9a1dd7b311e5a420e3a7c36b918a02">COAP_PROTO_TLS</a></div><div class="ttdeci">#define COAP_PROTO_TLS</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00345">pdu.h:345</a></div></div>
<div class="ttc" id="apdu_8h_html_a7cda9d9606a85c72bb218ab9b1fbb3a8"><div class="ttname"><a href="pdu_8h.html#a7cda9d9606a85c72bb218ab9b1fbb3a8">COAP_MAX_MESSAGE_SIZE_TCP8</a></div><div class="ttdeci">#define COAP_MAX_MESSAGE_SIZE_TCP8</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00042">pdu.h:42</a></div></div>
<div class="ttc" id="apdu_8h_html_a8f9814965b00b7a98ae8b2a10b8be8b6"><div class="ttname"><a href="pdu_8h.html#a8f9814965b00b7a98ae8b2a10b8be8b6">COAP_MAX_MESSAGE_SIZE_TCP0</a></div><div class="ttdeci">#define COAP_MAX_MESSAGE_SIZE_TCP0</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00041">pdu.h:41</a></div></div>
<div class="ttc" id="apdu_8h_html_a9cf7ca17ad57bd10f72711c1dfd26816"><div class="ttname"><a href="pdu_8h.html#a9cf7ca17ad57bd10f72711c1dfd26816">COAP_MESSAGE_SIZE_OFFSET_TCP16</a></div><div class="ttdeci">#define COAP_MESSAGE_SIZE_OFFSET_TCP16</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00037">pdu.h:37</a></div></div>
<div class="ttc" id="apdu_8h_html_a9f23fe72ad67820dcdf888bb8b619dde"><div class="ttname"><a href="pdu_8h.html#a9f23fe72ad67820dcdf888bb8b619dde">coap_proto_t</a></div><div class="ttdeci">uint8_t coap_proto_t</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00337">pdu.h:337</a></div></div>
<div class="ttc" id="apdu_8h_html_aa60dcb2495491104cc4c0fc50267fed0"><div class="ttname"><a href="pdu_8h.html#aa60dcb2495491104cc4c0fc50267fed0">COAP_MESSAGE_SIZE_OFFSET_TCP32</a></div><div class="ttdeci">#define COAP_MESSAGE_SIZE_OFFSET_TCP32</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00038">pdu.h:38</a></div></div>
<div class="ttc" id="apdu_8h_html_ab6ad49de4b14e7cf5bd0a2a1a87eef2f"><div class="ttname"><a href="pdu_8h.html#ab6ad49de4b14e7cf5bd0a2a1a87eef2f">COAP_MESSAGE_CON</a></div><div class="ttdeci">#define COAP_MESSAGE_CON</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00072">pdu.h:72</a></div></div>
<div class="ttc" id="apdu_8h_html_ac0c672474161e3066719c36e983a0228"><div class="ttname"><a href="pdu_8h.html#ac0c672474161e3066719c36e983a0228">COAP_DEFAULT_VERSION</a></div><div class="ttdeci">#define COAP_DEFAULT_VERSION</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00064">pdu.h:64</a></div></div>
<div class="ttc" id="apdu_8h_html_ac10ea7ae66e5e549b47854417311b560"><div class="ttname"><a href="pdu_8h.html#ac10ea7ae66e5e549b47854417311b560">COAP_PROTO_DTLS</a></div><div class="ttdeci">#define COAP_PROTO_DTLS</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00343">pdu.h:343</a></div></div>
<div class="ttc" id="apdu_8h_html_ad46f0093ab0b2b969651b0d45d9bf8d0"><div class="ttname"><a href="pdu_8h.html#ad46f0093ab0b2b969651b0d45d9bf8d0">COAP_PAYLOAD_START</a></div><div class="ttdeci">#define COAP_PAYLOAD_START</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00255">pdu.h:255</a></div></div>
<div class="ttc" id="apdu_8h_html_aed8d3a898b778a92637d2f2ef63d7fa3"><div class="ttname"><a href="pdu_8h.html#aed8d3a898b778a92637d2f2ef63d7fa3">COAP_MAX_MESSAGE_SIZE_TCP16</a></div><div class="ttdeci">#define COAP_MAX_MESSAGE_SIZE_TCP16</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00043">pdu.h:43</a></div></div>
<div class="ttc" id="apdu_8h_html_aeda5d0dcadd6cbb8c13e1950fcff787a"><div class="ttname"><a href="pdu_8h.html#aeda5d0dcadd6cbb8c13e1950fcff787a">COAP_PROTO_UDP</a></div><div class="ttdeci">#define COAP_PROTO_UDP</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00342">pdu.h:342</a></div></div>
<div class="ttc" id="astructcoap__option__t_html"><div class="ttname"><a href="structcoap__option__t.html">coap_option_t</a></div><div class="ttdoc">Representation of CoAP options.</div><div class="ttdef"><b>Definition</b> <a href="option_8h_source.html#l00031">option.h:31</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html"><div class="ttname"><a href="structcoap__pdu__t.html">coap_pdu_t</a></div><div class="ttdoc">structure for CoAP PDUs token, if any, follows the fixed size header, then options until payload mark...</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00285">pdu.h:285</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html_a07392f7f659e17d5efc74a1c0c21852e"><div class="ttname"><a href="structcoap__pdu__t.html#a07392f7f659e17d5efc74a1c0c21852e">coap_pdu_t::max_hdr_size</a></div><div class="ttdeci">uint8_t max_hdr_size</div><div class="ttdoc">space reserved for protocol-specific header</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00288">pdu.h:288</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html_a0d5796b82924c69852860053020d0684"><div class="ttname"><a href="structcoap__pdu__t.html#a0d5796b82924c69852860053020d0684">coap_pdu_t::type</a></div><div class="ttdeci">uint8_t type</div><div class="ttdoc">message type</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00286">pdu.h:286</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html_a3c42c790abb815d722fbebcd7702a200"><div class="ttname"><a href="structcoap__pdu__t.html#a3c42c790abb815d722fbebcd7702a200">coap_pdu_t::token</a></div><div class="ttdeci">uint8_t * token</div><div class="ttdoc">first byte of token, if any, or options</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00296">pdu.h:296</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html_a5bd82194d62c90d9243313cbbbe26d47"><div class="ttname"><a href="structcoap__pdu__t.html#a5bd82194d62c90d9243313cbbbe26d47">coap_pdu_t::max_size</a></div><div class="ttdeci">size_t max_size</div><div class="ttdoc">maximum size for token, options and payload, or zero for variable size pdu</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00295">pdu.h:295</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html_a65877a685b1f3428d3dc872af075ddc1"><div class="ttname"><a href="structcoap__pdu__t.html#a65877a685b1f3428d3dc872af075ddc1">coap_pdu_t::tid</a></div><div class="ttdeci">uint16_t tid</div><div class="ttdoc">transaction id, if any, in regular host byte order</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00291">pdu.h:291</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html_a69c774f85355eeacc4742355527a8097"><div class="ttname"><a href="structcoap__pdu__t.html#a69c774f85355eeacc4742355527a8097">coap_pdu_t::code</a></div><div class="ttdeci">uint8_t code</div><div class="ttdoc">request method (value 1–10) or response code (value 40-255)</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00287">pdu.h:287</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html_a8c05f6d455ff81d7751ddb61233a455b"><div class="ttname"><a href="structcoap__pdu__t.html#a8c05f6d455ff81d7751ddb61233a455b">coap_pdu_t::token_length</a></div><div class="ttdeci">uint8_t token_length</div><div class="ttdoc">length of Token</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00290">pdu.h:290</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html_a8e9b3dc1dc376c0d98a5e6940953cdc2"><div class="ttname"><a href="structcoap__pdu__t.html#a8e9b3dc1dc376c0d98a5e6940953cdc2">coap_pdu_t::hdr_size</a></div><div class="ttdeci">uint8_t hdr_size</div><div class="ttdoc">actaul size used for protocol-specific header</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00289">pdu.h:289</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html_a98ab43bf0f4eceae19535c5a10016111"><div class="ttname"><a href="structcoap__pdu__t.html#a98ab43bf0f4eceae19535c5a10016111">coap_pdu_t::data</a></div><div class="ttdeci">uint8_t * data</div><div class="ttdoc">first byte of payload, if any</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00297">pdu.h:297</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html_a9b6c14a84f46820634c4dd3059c73b20"><div class="ttname"><a href="structcoap__pdu__t.html#a9b6c14a84f46820634c4dd3059c73b20">coap_pdu_t::max_delta</a></div><div class="ttdeci">uint16_t max_delta</div><div class="ttdoc">highest option number</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00292">pdu.h:292</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html_ac5018459a3078a5b896119d7464cb273"><div class="ttname"><a href="structcoap__pdu__t.html#ac5018459a3078a5b896119d7464cb273">coap_pdu_t::used_size</a></div><div class="ttdeci">size_t used_size</div><div class="ttdoc">used bytes of storage for token, options and payload</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00294">pdu.h:294</a></div></div>
<div class="ttc" id="astructcoap__pdu__t_html_ad526a13d4c00b670d67f557245c2236c"><div class="ttname"><a href="structcoap__pdu__t.html#ad526a13d4c00b670d67f557245c2236c">coap_pdu_t::alloc_size</a></div><div class="ttdeci">size_t alloc_size</div><div class="ttdoc">allocated storage for token, options and payload</div><div class="ttdef"><b>Definition</b> <a href="pdu_8h_source.html#l00293">pdu.h:293</a></div></div>
<div class="ttc" id="astructcoap__session__t_html"><div class="ttname"><a href="structcoap__session__t.html">coap_session_t</a></div><div class="ttdef"><b>Definition</b> <a href="coap__session_8h_source.html#l00056">coap_session.h:56</a></div></div>
<div class="ttc" id="astructerror__desc__t_html"><div class="ttname"><a href="structerror__desc__t.html">error_desc_t</a></div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00349">pdu.c:349</a></div></div>
<div class="ttc" id="astructerror__desc__t_html_a5de81d35400d8705760ac225630022cc"><div class="ttname"><a href="structerror__desc__t.html#a5de81d35400d8705760ac225630022cc">error_desc_t::code</a></div><div class="ttdeci">unsigned char code</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00350">pdu.c:350</a></div></div>
<div class="ttc" id="astructerror__desc__t_html_ad857c9bd0071af04c60dfe17f074854f"><div class="ttname"><a href="structerror__desc__t.html#ad857c9bd0071af04c60dfe17f074854f">error_desc_t::phrase</a></div><div class="ttdeci">const char * phrase</div><div class="ttdef"><b>Definition</b> <a href="pdu_8c_source.html#l00351">pdu.c:351</a></div></div>
<div class="ttc" id="authash_8h_html_aba7bc1797add20fe3efdf37ced1182c5"><div class="ttname"><a href="uthash_8h.html#aba7bc1797add20fe3efdf37ced1182c5">uint8_t</a></div><div class="ttdeci">unsigned char uint8_t</div><div class="ttdef"><b>Definition</b> <a href="uthash_8h_source.html#l00079">uthash.h:79</a></div></div>
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